Question

The depth d(x), in feet, of a circular swimming pool at a point x feet from the edge is represented by the function below.

The function d of x equals 1 plus one-eighth x]

If the depth varies from 1 foot to 4 feet, which inequality describes the domain of the function?

0 ≤ x ≤ 8

0 ≤ x ≤ 24

0 ≤ x ≤ 40

1 ≤ x ≤ 8

Answer 1

The domain is possible input values. What you have been given is a function and a range, or output values. From the outputs, you need to find the possible inputs.

Answer 2

what would be the first input?

Answer 3

Well, that is what you need to find. You can inverse the function, or you can just put the y value in and then solve for x.

Answer 4

Or d values in this case.

Answer 5

so the answer would be B?

Answer 6

Yep. That one will give answers of 1 to 4.

Answer 7

thanks

Answer 8

np. Have fun.