Answer:
3/8
Step-by-step explanation:
they simply combined the like terms (aka the x numbers in this case) so all that's left is 3/8
X=4x+7
X=4y+7
X-7=4y
X-7/4=y
F-1(x)=x-7/4
9/16
5/8 - 1/4^2
Exponents first
5/8 - 1/16
Get a common denominator
5/8 *2/2 - 1/16
10/16 - 1/16
b is the answer
f(x) = ax^2 + bx + c
