Unit 4 Test Review

Which of the following situations could be described by the expression X-2.95 ? 

• Ms. Rhodes ran X miles yesterday, and 2.95 miles farther today. 

• Ms. Rhodes ran X miles yesterday, and 2.95 miles fewer today. 

• Ms. Rhodes ran 2.95 miles yesterday, and X miles farther today. 

• Ms. Rhodes ran 2.95 miles yesterday, and X miles fewer today. 

• 260

• 112.5

• 97

• 100.5

Which of the following equations has x=10 as a solution? SELECT ALL THAT APPLY 

• 2x=10

• x-12=15

• 9+x=19 

• 15x=150 

Which expression represents the following: A baker plans to make 100 cakes for each guest at a party. The letter g represents the number of guests at the party. What expression represents the number of cakes the baker should make? 

• 100+g 

• g-100 

• 100g

Write an equation that shows the relationship between the age of Richard and Kate where x represents Kates age. Richard is 50 years old. This is 10 years younger than his sister Kate. 

• 10=x-50

• x+10=50

• 10-x=50

• x-10=50

Which of the following expressions is not equivalent to 15x+20y? 

• 5(3x+4y) 

• 3(5x+20y) 

• 5(3x) +20y 

• 7x+10y+8x+10y 

Which expression has the same value as 7(4+3) 

• 28+21 

• 11+3 

• 11+10 

• 28+3 

Mr. McCain used 23 bricks for each school that he built. Which of the following expressions represents the total number of bricks he would need to make Y schools? 

• 23-y 

• y+23 

• 23y

Sally’s mom is 60, which is four times as old as Sally. What is the equation that represents this situation and what is Sally’s age? X will represent sally’s age 

•  x+4=60; x=56 

• 4x=60; x= 15 

• 4x=60; x=56 

Use the information to answer the following question:

40% of x is 20 write an equation that shows the relationships of 40%, x, and 20. Use your equation to find x.

• 20x=40; x=2 

• 0.40x=20; x=50 

• 0.20x=40; x=200