Lesson 12 Cool Down: With a coupon, you can get a pair of shoes that normally cost $84 for only $72.



What percentage of the original cost was the discount?



Explain or show your reasoning.

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?

Write the percent as a fraction or mixed number in simplest form. 0.8%