Question

f(x) = 4x3 + 15x+28
g(x)= x +4
OPI​

Answer 1

f(x) = 4(x)3 + 15x + 28

g(x) = x+4= 0

x= 0-4

x= 4

f(4) =4(4)3 + 15(4) + 28

f(4) = 256+60+28

f(4) = 344

it's your answer❤❤