How to solve a system of equations by using elimination and how to tell if you should use addition or subtraction?

a shade of green paint is made from 5 parts yellow mixed with 3 parts blue. if 2 cans of yellow are used, how many cans of blue should be used?

stephanie earns 4,000 a month, plus a 10 % commission on everything she sells. if during one month, she sold 50,000 worth of product, what was her salary for that month?

What happens when you round 9,999.999 to any place?

Mitchel poured the contents of a completely filled come into an empty cylinder and the cylinder became two-thirds full. The cylinder had a radius of 5 cm and a height of 15 cm. what where possible dimensions of the cone? Use 3.14 to approximate pi.

Daryl read 40 pages of a book on Monday and 1/8 of it on Tuesday. He completed the remaining 1/4 of the book on Wednesday. How many pages are there in the book?

A square floor has an area of 480 square feet. Kristin wants to put molding around the entire perimeter of the floor. Approximately how much molding does she need? A. 720 feet B. 120 feet C. 90 feet D. 88 feet

What is larger 7 or 24/4

What is 6 cups minus 3 2/5 cups

Make a real world problem with - 3.5<-1.5

An outdoor spa (hot tub) draws 1487 watts to keep the water warm. If the utility company charges $0.13 per kilowatt-hour, how much does it cost to operate the spa for four months during the winter (24 hours per day) ? Assume each month has 30 days.