Final answer:
The function f(x)=2/5x+24 corresponds to the option d. -8, 3.
Step-by-step explanation:
The provided function is f(x)=2/5x+24. To answer the question, we need to determine which option corresponds to a function that has a positive value at x = 3 and a positive slope that is decreasing in magnitude with increasing x.
By plugging in x = 3 into the given function, we get:
f(3) = 2/5(3) + 24 = 6/5 + 24 = 30/5 + 24 = 6 + 24 = 30
Therefore, the option that corresponds to the provided function is d. -8, 3.