Christy purchased an art easel at a garage sale for $30. She later sold the easel on Craigslist for $45. What was the percent increase of the price of the easel?

The percent increase by 15%

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.

jml angle lkj & angle mj = lm