Answer:
gof(x) = x²+8x+15
Step-by-step explanation:
gof(x) = g(f(x))
f(x) = x + 4 and g(x)=x²-1
Substituting
gof(x) = g(f(x)) = g(x + 4) = (x+4)²-1
gof(x) = x²+8x+16 -1 = x²+8x+15
That is if f(x) = x + 4 and g(x)=x²-1, gof(x) = x²+8x+15
Answer:
42 square inches
Step-by-step explanation:
Area of a triangle = (1/2)(base)(height)
A = 1/2(12)(7)
A = 1/2(84)
A = 42
Answer:
A. 20ft
Step-by-step explanation: