Helena is watching a movie on television. She notices that there are 9 min of commercials for every h of
the movie.
Hurry please

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!

this would be 35. 35 + 5 = 40. you take the known constant and subtract by the answer of the equation and you get y.