40% since the number of books went UP it is a percent increase
Answer:
Your answers would be:
x = 10 and x = -8
Step-by-step explanation:
Solve for the zeros:
x² - 2x - 78 = 2
Subtract both sides by 2.
x² - 2x - 80 = 0
Use the quadratic formula: 
a = 1
b = -2
c = -80
Plug in and solve:

Solve for +:

Solve for -:

Fixed expense because it is a monthly payment
Answer:
Option A
Step-by-step explanation:
Land area of Charlotte, NC =
square miles
Scale to be used,
1 square miles =
square acres
By this scale,
square miles =
square acres
= 
=
square acres
=
square acres
Therefore, Option A will be the correct option.