A scientist is experimenting with bacteria in his laboratory. He starts out with 3 bacteria. The number of bacteria quadruple every hour. Which equation represents the growth of the bacteria over x hours?

a. f(x) = 4(3^x)
b. f(x) = 3^x + 4
c. f(x) = 4^x + 3
d. f(x) = 3(4^x)

Answer:

The measures of supplementary angles add up to 180°

If two supplementary angles are adjacent, they form a 360° angle. ( or a linear pair )

....of the known angle from 180

Step-by-step explanation:

Some common math techniques that are best to know generally

Answer:

radius r = 12 in

diameter d = 24 in

circumference C = 75.3982237 in

area A = 452.389342 in2

Step-by-step explanation:

Answer:

x=12

Step-by-step explanation:

Answer:

x=12

Step-by-step explanation:

multiply both sides by 4 to cancel the fraction 1/4x so you can add them together

so once you multiply both sides by 4 the equation is

2x+20=x+32 so then combine like terms but subtracting x so that's

x+20=32 then minus 20 to solve

x=12

Hope this helps! :)

Answers:

#4= 5

#5= +3

#4 Jake of ratio is: 3:15

                          2:10

                          5:25

So 25/5 or 10/2 or 15/3 they all get the same result which is 5

#5 The pattern of the X is 0, 1, 2, 3...

     The pattern of the Y is 3, 6, 9, 12...

The pattern of Y would be adding 3.

+3

Answer: 144

Step-by-step explanation:

No need explanation

Answer:

.20

Step-by-step explanation:

add them up and divide them amount of twins by the sum

What exactly are we trying to answer?

Answer: b

Step-by-step explanation:

The square of 13 is 169.

Here we have to calculate,

Squared of 13

Therefore, we can write it as

13² = 13 x 13

We have to multiply 13 with 13

Since we know that,

They are the numbers multiplied by themselves, according to the square number definition. In other terms, a square number is formed by multiplying a natural number by itself.

And to multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Now,

    1  3

 x 1   3

__________

   3  9

1  3  x

______

1 6 9

Hence,

13² = 13 x 13

     = 169

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Answer:

1. 168

2. 70

3. 15

Hope that this helps!

Answer:

Following on from step 3

0 = (x + 1)(x + 3)

equate each factor to zero and solve for x

x + 1 = 0 ⇒ x = - 1

x + 3 = 0 ⇒ x = - 3

Substitute these values into either of the 2 equations for the corresponding value of y

using y = 2x + 11

x = - 1 : y = - 2 + 11 = 9 ⇒ (- 1, 9 )

x = - 3 : y = - 6 + 11 = 5 ⇒ (- 3, 5 )

Step-by-step explanation:

The solutions that represents the system of the equation are (- 3, 5 ) and (- 1, 9 )

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

0 = (x + 1)(x + 3)

By equating each factor to zero and solve for x

x + 1 = 0 ⇒ x = - 1

x + 3 = 0 ⇒ x = - 3

Substitute these values in 2 equations for the corresponding value of y

using y = 2x + 11

x = - 1

y = - 2 + 11 = 9 ⇒ (- 1, 9 )

x = - 3

y = - 6 + 11 = 5 ⇒ (- 3, 5 )

Therefore, the solutions are (- 3, 5 ) and (- 1, 9 )

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Answer:

A

Step-by-step explanation:

8x (the babysitter gets paid 8 dollars an hour, and x represents number of hours)

3 (this is the additional tip the babysitter gets; it's not dependent on the number of hours she/he works)

The babysitter will get paid the same despite babysitting two kids- no variable here is dependent on the amount of kids the babysitter babysits.

Answer:

A) 8x + 3

Step-by-step explanation:

The babysitter gets 8 dollars per hours, and x is the hours, so 8x, 8 dollars per hour. She also gets 3 dollars if she gets the children to sleep on time, so add 3. The equation is 8x + 3.

Answer:

Since there are 6 apples in the salad, there are 4 pears (6:4 = 3:2), and so there are 5 peaches.

Answer:

136 full containers

Step-by-step explanation:

There is 4 quarts in a gallon. So you multiply 34 time 4.

Answer:

Please explain what it is you would like help with.

Answer:

A group of ten people would be willing to spend 135$

tell me if im wrong plz

Step-by-step explanation:

Answer: ther u go

Step-by-step explanation:

Answer:

The answer is on the pic

Step-by-step explanation:

You pu the cordinaence one the graph and it makes a rectangle

the area part is area= 1/2 times perimeter x apothem

I hope this helped I don't know if this is 100% right but the formula might not be right

email your teacher if you need more help :))

Answer:

The answer to this is 9b+10s, hope this helps.

Answer:

9b + 10s

hope this helps

Answer:

18900 cm

Step-by-step explanation:

1. Multiply 18 by 25 to get the area of the floor

2. Multiply the result by 42 cm (from the top of the rectangle) to get the total volume because you are multiplying the area of the bottom rectangle by the top to get the volume

3. Answer: 18,900 cm

Good luck :)

Answer:

The group could buy 57 t-shirts without going over the budget.

Step-by-step explanation:

700=12x+10

690=12x

57.5

Answer:

700=12x+10

690=12x

57.5

Step-by-step explanation:

Answer:

1/12 I think this is it if not sorry

[tex] \frac{3}{4} - \frac{5}{6} \\ \\ = > \frac{3 - 5}{36} \\ \\ = > \frac{ - 2}{36} = > \frac{ - 1}{12} answer[/tex] αηѕωєя

Answer:

(9,3)

Step-by-step explanation:

Answer: 70.1

Step-by-step explanation:

Answer: the first one

Explanation: If it is a function, then the x-column will never repeat.

Answer:

true

Step-by-step explanation:

im pretty sure its true

Answer:

actually it's false because to find the mode you find the number that occurs most often. In this case it's 8.

Answer:

The statement is false. The only shape with fo it lines of symmetry is a square

Step-by-step explanation:

Answer:

77/24 pounds is the answer of the question