Which expression below is equivalent to the following expression?
20 + 8y - 9y - 21
2 points
2
Question 2
2.
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.__________
1 point
1
Question 3
3.
Which of the following expressions ARE equivalent to the expression?
1 point
1
Question 4
4.
For which value of a will the equation 4x – 8 = 4x – a have an infinite number of solutions?
1 point
1
Question 5
5.
1 point
1
Question 6
6.
Solve for x. (Answer must be a fraction)
1 point
1
Question 7
7.
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?
1 point
1
Question 8
8.
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. __________