How do you know that each of these constructions is valid when made with a compass and straightedge?

Riding with the wind at her back, a cyclist takes an hour less time to cover 80 miles than without any wind. Riding with the wind increases the cyclist's speed by 2 miles per hour. What is her speed when riding with the wind?

42 of the employees at Carlos car repair wear contact lenses. What percent of the employees wear contact lenses?

What is the common ratio in the sequence 6 12 24 48 96 A-2 B2 C6 D1/2

11 less than four times a number is 11

X-2y=-26 x-y=-2 solution of systems equation

Thomas rents a car for his vacation. the mileage included with the rental is 54 miles. For every mile he drives over 54 miles, he needs to pay $1 4/5. If he drives 69 miles, how much extra does he need to pay?

A package of organic strawberries cost 1.50 while they are in season and $2.25 when they are not what is the percent increase

Name three numbers between. 33 and. 34

Boris bought a desktop computer and a laptop computer. Before finance charges, the laptop cost $150 more than the desktop. He paid for the computers using two different financing plans.

What is 11 increased by 12%