Which expression below is equivalent to the following expression?
20 + 8y - 9y - 21
Below is the configuration of a work desk in a 7th grade classroom. All units are in inches.
Find the perimeter of the work desk.
Find the area of the work desk.
Which of the following expressions ARE equivalent to the expression?
For which value of a will the equation 4x – 8 = 4x – a have an infinite number of solutions?
Solve for x. (Answer must be a fraction)
Charlie’s house needs to be painted. Three paint companies wrote expressions to represent their hourly rates where h represents the number of hours they work at his house.
Pam’s Paints 30.50h + 120
Mack’s Murals & More 5(6.10h + 25)
Hettie’s House Painters 25.50h + 150
How many hours will Mack and Hattie have to paint to charge the same amount?
Jenny solved the equation -3 - (5x - 6) = -2x + 9. Her work is shown below.
Identify and explain Jenny’s error in solving the equation.
Resolve the equation -3 - (5x - 6) = -2x + 9 to find the correct solution.