Math Quiz 7B Valentina Claro Arias

Identify the terms and coefficients of this expression: 8x-20y-10.

Terms:10, 8 and 20 Coefficient:8x and 20x

Terms:8 and 20 Coefficients: 8x, 20y and 10

Terms: 8x, 20y and 10 coefficients: 8 and 20

Terms:8 Coefficients: 8x, 20y and 10

Matt is saving money to buy a roller skate. The roller skate costs $245. He has $125 saved, and each week he adds $15 to her savings.How long will it take him to save enough money to buy the bike?

1000

Noah was given a raise of $0.75 per hour, which gave her a new wage of $12.25 per hour.Write and solve a equation to determine Noah's hourly wage before her raise.Show that your answer is reasonable.

13.4

9.1

11.50

A small square of side 2x is cut from the corner of a rectangle with a width of 10 centimeters and length of 20 centimeters. Write an expression in terms of x for the area of the remaining shape.

200 - 4x 2

300+9x

150+5y

200+4x2

The distance bewteen Harry and Kate is 2500 meters. Kate and Harry start walking toward one another and Kate' dog start running back and forth between Harry and Kate at a speed of 120 meters per minute. Harry walks at the speed of 40 meters per minute while Kate walks at the speed of 60 meters per minute. What distsnce will the dog have travelled when Harry and Kate meet each other?

4000 meters

578 meters

9010 meters

3000 meters

John gave half of his stamps to Jim. Jim gave gave half of his stamps to Carla. Carla gave 1/4 of the stamps given to her to Thomas and kept the remaining 12. How many stamps did John start with?

64 stamps

640 stamps

550 stamps

55 stamps

A school has 10 classes with the same number of students in each class. One day, the weather was bad and many students were absent. 5 classes were half full, 3 classes were 3/4 full and 2 classes were 1/8 empty. A total of 70 students were absent. How many students are in this school when no students are absent?

450

200

235

100

Liam is setting up 443 remote control cars. Each car needs 4 batteries to operate. How many batteries does Liam need for his remote control cars?

2.772

752

1.763

1.772

Kathleen has been saving money to buy a new cell phone.For her birthday, Kathleen's mother gave her twice what she had already saved.Now she has $135. How much money did Kathleen have before her birthday?

$132

$90

$45

$47

Oliver works at a library and earns $16 per hour. On Wednesday, he work t hours at a library and his neighbor paid him $13 to walk her dog. Which expression represents the total amount Oliver earned on Wednesday?

16 - 13t

16 +13t

16t- 13

16t + 13

A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the car.

8.10 m/s/s

9.9m/s/s

5.87m/s/s

3.54m/s/s

Math Quiz 7B Valentina Claro Arias

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