Answer:
r = 90
Step-by-step explanation:
Our goal is always to get the variable we're trying to solve for on one side of the =, and everything else on the other side. Since we are solving for r here, we want to get rid of the 20 first, and then the 2.
subtract 20 from both sides:
divide both sides by 2:
19.90 dollars if you need help with steps just ask!
It should be 10 inch x 14 inch if it is 2x larger
