Gina can run 21 laps in 7 minutes. what is her average running rate in laps per minute

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?

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Aquadratic equation in standard from is written ax^2= bx+c, where a, b and c are real numbers and a is not zero?