Answer:
D. 30
Explanation:
First off, the wording, I think you meant "3/4"?
g(t)= 3/4t pretty much just means "g" of "t" is equal to 3/4 times t
not "g" is irrelevant, not really, but it mostly is,
"g" is the equation as a whole excluding the "t" value and "t" is the value being multiplied so here we are given t=40.
g(40)= 3/4t =>
g(40)= 3/4(40) =>
30