I don't get solving equations with variables on both sides with word problems

Write a simplified expression using exponents that represents the area of the square.

The sum of three numbers is 18. The sum of the first and second numbers is 15, and the first number is 3 times the third number. Find the numbers.

Robert called two bowling centers, Fannin Lanes and Fun Times Lanes, to déterminé the cost to bowl. Fannin Lanes charges 2.50 per games plus 2 for shoe rental, and Fun Time Lanes charges 2 per game plus 4 for shoe rental.

If 75 square feet of aluminum foil costs $3.99, what is the cost per square foot?

Brendan has 33 coins in his pocket, all of which are dimes and quarters. if the total value of his change is 615 cents, how many dimes and how many quarters does he have?

Convert 39/5 to a mixed number written in lowest terms

The Brewers spent $28 buying new toys for their cats and dogs. Dog toys cost $6 each and cat toys cost $5 each.

Alisha has a 15000 car loan with 6 percent interest rate that is compounded annually how much will she have paid at the end of the five year loan term

A science teacher needs to choose 4 students from a class of 20 to go to the library to do some research. How many different groups can be selected? A.) 3,060 B.) 104,976 C.) None are correct D.) 73,440

Which of these is equal to 0.13? 13 A. 99 12 B. 90 c. 1