Unit 2 Retake Big Idea 1&2 Expressions

Last updated over 1 year ago

8 questions

Unit 2 Retake Big Idea 1&2 Expressions

Last updated over 1 year ago

8 questions

Question 1

Which expression below is equivalent to the following expression?

20 + 8y - 9y - 21

2(10 + 4y - 7y - 19)

2(10 + 4y) - 3(3y - 7)

4(5+2y - 5 - 17)

4(5+2y) - 3(3y + 7)

Question 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.__________

Question 3

Which of the following expressions ARE equivalent to the expression?

Question 4

For which value of a will the equation 4x – 8 = 4x – a have an infinite number of solutions?

-8

8

no possible value

all real numbers 

Question 5

Question 6

Solve for x. (Answer must be a fraction)

Question 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?

Question 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.  __________

Question 1

Which expression below is equivalent to the following expression?

20 + 8y - 9y - 21

2(10 + 4y - 7y - 19)

2(10 + 4y) - 3(3y - 7)

4(5+2y - 5 - 17)

4(5+2y) - 3(3y + 7)

Question 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.__________

Question 3

Which of the following expressions ARE equivalent to the expression?

Question 4

For which value of a will the equation 4x – 8 = 4x – a have an infinite number of solutions?

-8

8

no possible value

all real numbers 

Question 5

Question 6

Solve for x. (Answer must be a fraction)

Question 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?

Question 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.  __________

Unit 2 Retake Big Idea 1&2 Expressions

Unit 2 Retake Big Idea 1&2 Expressions

Which expression below is equivalent to the following expression?20 + 8y - 9y - 21

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)

Which expression below is equivalent to the following expression?20 + 8y - 9y - 21

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)

Which expression below is equivalent to the following expression?

20 + 8y - 9y - 21

Which expression below is equivalent to the following expression?

20 + 8y - 9y - 21