Which of the following statements is true?

OPTION D

Step-by-step explanation:

We know that the function is not defined for values of x less or equal than zero, therefore its domain is and the range is all real numbers.

In this case we have the function , then must be greater than zero.

Then:

Therefore, the domain of the function is:

or

And the range is:

All real numbers.

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

the answer is d

hope this