Answer:
answer : b
Step-by-step explanation:
hello :
calculate : f (x)=-7(x+4)²-1
f(x) = -7(x²+16+8x) -1 use identity : (a+b)² = a²+b²+2ab
f(x) = -7x²-112 -56x -1
f(x) = -7x²-56x -113
Answer: Answer in the photo
18miles per day
Just do 108/6
Term 1: 5x^3
Term 2: 8x^2y
Term 3: 4xy
Term 4: 4
x≈ −1.21039852,1.25324234 assuming was the exponent to 15x
