How do you convert r=8 cos(θ) into cartesian form?

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

Iwill give brainliest. suppose tommy walks from his home at (0, 0) to the mall at (0, 5), and then walks to a movie theater at (6, 5). after leaving the theater tommy walks to the store at (6, 0) before returning home. if each grid square represents one block, how many blocks does he walk?

Common binomial factor of 6x(3x+7)+5(3x+7)