Step-by-step explanation: They need to cover expense of $13200. If printing fee is $25 and they sell the books for $40 each, then that means when selling a book they cover expense of printing plus they earn $15 per book.

So if they earn $15 per book that means they have to sell 13200/15=880 books to break even.

If you want to solve this by using equation the this would look like this:

expenses: $13200 + $25x where x is number of books sold

earnings: $40x

Equation:

13200+25x=40x

13200=15x

x=880

4 0

3 years ago

If the number of bacteria in a colony doubles every 210 minutes and the population is currently 8,000 bacteria, what will the po

Stells [14]

Answer:

D is the answer

64,000 exponential function

Step-by-step explanation:

64,000 exponential function

The number of bacteria in a colony doubles every 210 minutes.

The population of bacteria = 8000

Determine how many times the population will double.

$\frac{630}{210}$

= 3

Multiply the population by 2 a total of 3 times.

8000 × 2³ = 64,000

8 0

3 years ago

6-y-x^2 use x=5 and y=4

Ulleksa [173]

Answer:

6 - 4 - 5 ^ 2 = -23

hope this helps

5 0

3 years ago