After a discount, the price of a t-shirt is $12. The original price of the shirt was $20. What was the percent discount?​

Nell has a sales clerk job that pays $12 per hour for regular gas work hours. she gets double time for any hours over 40 that she works in a week. how many hours did nell work if her weekly pay was $744

What is the value of x in the equation 6(x + 1) – 5x = 8 + 2(x – 1)?

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?