F (x) = 6x + 5 and x (y) = 4y2 - 25 For the given functions, find f (x) if y = 3.

if my math is right the answer is f (x) = 11 (19)

Step-by-step explanation:

f (x) = 6x+5

divide x form both sides

f=6+5

f=11

x (y) = 4y2-25

x (3) = 4 (3) 2-25

divide 3 from both sides

x=4 (1) 2 - 25

add the 4 and 2

x=6 (1) - 25

x=6-25

x=19

f=11 x=19