Test 4 Review 2 Hamburgers cost 2 each

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Test 4 Review

Test 4 Review

2. Hamburgers cost $2 each and pizzas cost $6 each. If the number of

2. Hamburgers cost $2 each and pizzas cost $6 each. If the number of hamburgers was 2 more than twice the number of pizzas and if a total of $84 was spent, how many hamburgers and how many pizzas were purchased.

Answer: 8 pizzas 18 hamburgers

Answer: 8 pizzas 18 hamburgers

9. Find x, y and z.

9. Find x, y and z.

Answer: Z = 170 X = 120 Y = 105

Answer: Z = 170 X = 120 Y = 105

3. The chemical formula for sulfuric acid is H 2 SO 4. If the

3. The chemical formula for sulfuric acid is H 2 SO 4. If the weight of the acid is 1470 grams, how much does the sulfur weight? (H, 1: S, 32: O, 16)

Answer: 480 grams

Answer: 480 grams

-3/4 6. Simplify 1/-16

-3/4 6. Simplify 1/-16

Answer: -8

Answer: -8

-5/3 5. Simplify (-8)

-5/3 5. Simplify (-8)

Answer: -1/32

Answer: -1/32

7. Simplify 3√(3/13) – 7√(13/3)

7. Simplify 3√(3/13) – 7√(13/3)

Answer: -82√ 39/39

Answer: -82√ 39/39

1. Linda headed east at 20 miles per hour on her bicycle at 9

1. Linda headed east at 20 miles per hour on her bicycle at 9 a. m. Three hours later Shanna headed west from the same place, walking at 6 miles per hour. What time was it when they were 164 miles apart?

Answer: 4 pm

Answer: 4 pm

8. Simplify 2√ 32(3√ 24 - √ 10)

8. Simplify 2√ 32(3√ 24 - √ 10)

Answer: 96√ 3 – 16√ 5

Answer: 96√ 3 – 16√ 5

4. The number of participants that entered the contest was 2 ¾ times the

4. The number of participants that entered the contest was 2 ¾ times the number anticipated. If 9075 participants entered the contest, how many were anticipated?

Answer: 3300 participants

Answer: 3300 participants

12. Simplify

12. Simplify

Answer: x+2 x+3

Answer: x+2 x+3

10. Find the equation of the line that passes through the points ( -5,

10. Find the equation of the line that passes through the points ( -5, -2) and (4, -3).

Answer: y = -1/9 x – 23/9

Answer: y = -1/9 x – 23/9

11. Simplify

11. Simplify

Answer: 2 2 3 acz + 2 x 2 2 xz– 4

Answer: 2 2 3 acz + 2 x 2 2 xz– 4

15. Multiply

15. Multiply

Answer: -1 5 m – 10 t -1

Answer: -1 5 m – 10 t -1

13. Simplify

13. Simplify

Answer: 12

Answer: 12

14. Add

14. Add

Answer: 2 -3 x + 10 x + 5 (x + 2)(x – 3)

Answer: 2 -3 x + 10 x + 5 (x + 2)(x – 3)

17. Find the distance between (-5, -2) and (4, -3).

17. Find the distance between (-5, -2) and (4, -3).

Answer: √ 82

Answer: √ 82

20. Solve

20. Solve

Answer: x = -6, 3

Answer: x = -6, 3

19. Solve

19. Solve

Answer: 2

Answer: 2

3 16. Expand (x – 2)

3 16. Expand (x – 2)

Answer: x – 6 x + 12 x – 8 3 2

Answer: x – 6 x + 12 x – 8 3 2

18. Solve

18. Solve

Answer: -27/2

Answer: -27/2