math

posted by anomynous

1.2(y + 1) for y = 2

A. 6
B. 5
C. 7
D. 8

Is it “A”?

2. The cost in dollars of a school banquet is 74 + 12n, where n is the number of people attending. What is the cost for 52 people?

A. \$550
B. \$698
C. \$624
D. \$138

Is it “B”?

3. Write a word phrase for p / 3.

A. a number plus 3
B. the product of a number and 3
C. the quotient of a number and 3
D. a number decreased by 3

Is it “C”?

4. A basketball player scores 10 points per game. Write an algebraic expression to show how many points she might score in n games.

A. 10n
B. 10 + n
C. 10 / n
D. n – 10
Is it “C”?

5. x – 16 = 14

A. 30
B. 2
C. -2
D. -30

Is it “A”?

6. Jake scored about twice as many points as Willie. Jake scored 22 points. Write an equation and use it to estimate the number n of points Willie scored.

A. n + 2 = 22; about 20 points
B. n – 2 = 22; about 24 points
C. 2n = 22; about 11 points
D. n / 2 = 22; about 44 points

Is it “C”?

7.-13x = -78

A. 6
B.-6
C. 1,014
D. -1,014

Is it “A”?

8. r/7 = -8

A. -56
B. -7/8
C. -1/56
D. 7

Is it “A”?

9. Kenny owned so many baseball cards that he sold 82 of them. After selling the cards, he still had 159 left. Write and solve an equation to find the number of baseball cards b Kenny had originally.

A. b + 85 = 159; 77 cards
B. b – 82 = 159; 241 cards
C. b + 159 = 82; 241 cards
D. b + 159 = 82; 77 cards

Is it “C”?

10.3 x + 14 = 23

A. 3
B. 6
C. 9
D. 4

Is it “A”?

11. Find a solution to the inequality x > 4.

A. 8
B. 3
C. 4
D. 0

Is it “A”?

12. Write an inequality to model the situation: The number n of people who attended the game was at least 50.

A. n (underlined >) 50
B. n (underlined <) 50
C. n > 50
D. n < 50

13. x + 18 (underlined <) -3

A. x (underlined <) -21
B. x (underlined <) 21
C. x (underlined <) -15
D. x (underlined <) 15

Is it “A”?

14.4z > -60

A. z > 15
B. z > -15
C. z < 15
D. z < -15

Is it “D”?

15. Your class collected more than 380 cans of food in two weeks for the annual food drive. In the first week, 145 cans were collected. How many cans c of food were collected in the second week? Write and solve and inequality.

A. 145 + c < 380; c < 235
B. c + 145 > 380; c > 525
C. c – 145 (underlined >) 380; c (underlined >) 525
D. 145 + c > 380; c > 235

16. A costume designer made 10 costumes that each used 5.8 yards of fabric. If she had 238.2 yards of fabric to start with, about how much fabric does the costume designer have left? Write an equation and estimate the amount of fabric left.

17. A costume went to a garden shop and bought some potting soil for \$12.50 and 6 shrubs. If the total bill was \$71.00, how much did each shrub cost if they all cost the same? Write and solve an equation.

1. PsyDAG

1-3 agree

4 disagree

5-6 agree

7-8 agree

9 disagree

10-11 agree

12 n ≥ 50 (≥ is made with > and "option" keys together)

13 agree

14 disagree

15 D

16 238.2 - (10*5.8) = ?

17 (71-12.50)/6 = ?

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