The sum of 3 times a number and 4 is between - 8 and 10. Define a variable, write an inequality, and solve the problem.

During summer vacation, you charge people 8$ per hour for swimming lessons and 20$ registration fee. If you make 52$ one day, how many hours did you spend teaching lessons?

Mario spent $23.85 at the bookstore on one book and some magazines. The book cost $12.60 and the magazines cost $2.25 each. How many magazines did Mario buy?

2w-y=7w-z; solve for w

Scientific notation of 864,000,000,000,000

Which inequality is true for x = 2? A) 6x + 20 < 29 B) 7x - 10 < 11 C) 14x + 10 < 37 D) 15x - 18 < 12

Area of Circles - Item 20636 Qy A circle has an area of 80 square centimeters. Which answer is closest to the measure of its radius?

Convert 2.1 yd/min = ft/s

A 68 year old retiree has a pension savings of $40,000 , a 401 k of $63,000 , and an IRA account of $59,000 . Before 2008 , he had 2% more cash in the pension, 12% more in the IRA, and 1% more in the 401 k.

What is 5/8 equal to

A set of stairs is being built as shown. What is the height of the stair? 3 triangles form stairs. Each triangle has a side length of 9 inches and hypotenuse of 15 inches. The stair is inches high.