Jessica wanted to solve the following situation.
The price of an item increased by 15%. The amount of the increase was $86. What was the price of the item before the increase?
She wrote the following equation: 15% × 86 = x.
A) Will this equation give her the correct answer? If not, what is the correct equation?
B) What was the original price of the item?
2. a) What is wrong with the statement "The line has no slope."?
b) Why is the slope of a horizontal line zero? Give an example.
c) Write the equation of a line with a slope of -5 and a y-intercept of 12