Question

Veronica sells berries at a farmer's market. She pays $45 for the booth, and earns $5 per pound of berries sold. She sells between 10 and 30 pounds of berries at each market.

The function p(b)=5b−45p(b)=5b−45 represents Veronica's market earnings as a function of pounds of berries sold.

What is the practical domain of the function?


A. all integers between 10 and 30 inclusive

B. all real numbers

C. {10,  20,  30}{10,  20,  30}

D. 10≤b≤30

Answer 1

Answer was 10 ≤ b ≤ 30

Answer 2

The first thing we must do for this case is to define variables.
We have then:
b: number of berries sold
We now write the function that models the problem.
We have then:

`p (b) = 5b - 45`
The domain of the function is:
All integers that belong to the following interval:
[10, 30]
Answer:
The practical domain of the function is:
A. all integers between 10 and 30 inclusive