Ms. kelsey gets a mani/pedi for $48 and wants to hive a 20% tip. se pays $60 how much change should she recieve

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?