Question

Anna buys trees from a nursery that cost $5.95 each. She has a maximum of $40 to spend on her tree purchases. The total cost, with respect to the number of trees purchased, can be modeled by a function. Select the statement that correctly describes the domain of the function.
A. The domain is the set of all integers greater than or equal to 0 and less than or equal to 6.

B. The domain is the set of all integers greater than or equal to 0 and less than or equal to 7.

C. The domain is the set of all real number greater than or equal to 0 and less than or equal to 35.7

D. The domain is the set of all real numbers greater than or equal to 0 and less than or equal to 40.

Answer 1

The domain is the set of allowable values of the number of trees Anna can buy.
Her budget allows for the purchase of 6 trees, but not 7. The description of the domain matches ...
.. A. The domain is the set of all integers greater than or equal to 0 and less than or equal to 6.

Answer 2

I think it's D. Hope it helps.