Please check my answers

1.
–9x – 5 = –95

a. 17
b. 11
c. 10 ***
d. –10

2.
w over four – 4 = 3

a. –4
b. 28 ***
c. 3
d. 11

3.
d over three + 10 = 7

a. 51
b. 20
c. 0
d. –9 ***

4.
2(2 – 2x) = –3x

a.–4
b. 4 ***
c. 6
d. 0

5.
2.9n + 1.7 = 3.5 + 2.3n

a. 3 ***
b. –3
c. 1.3
d. 1

For questions 6–7, simplify the expression.

6.
–6 – 7(c + 10)

a. 64 – 7c
b. –76 – 7c ***
c. 4 – 13c
d. –16 – 13c

7.
5x + 6(x – 2) – 8(x – 3)

a. 19x + 36
b. 19x + 12
c. 3x – 36
d. 3x + 12 ***

For questions 8–10, solve the inequality.

8.
c + 6 < –20

a. c < –26
b. c < –14 ***
c. c < 26
d. c < 14

9.
r over fifteen ≥ –3

a. r ≥ –45 ***
b. r ≥ –15
c. r ≥ 12
d. r ≥ 45

10.
–8x > –64

a. x < 8 ***
b. x > 8
c. x < –72
d. x > 72

For questions 13–14, write and solve an equation.
13.
The total was $29.00 after adding a $4.00 tip to the bill for a family of five, each of whom ordered a hot dog. What was the price of a hot dog?

a. 4 – 5x = 29; $5.00
b. 4 + 5x = 29; $5.00 ***
c. 29 – 5x = 4; $5.00
d. 5x = 29 = 4; $5.00

14.
Mark weighs 74 pounds. Together, he and his sister weigh six pounds more than three times the weight of his sister. What is the weight, w, of Mark’s sister?

a. 74 + w = 3w; 37 lb
b. 74 + w – 6 = 3w; 18.5 lb
c. 74 + w = 3w + 6; 34 lb ***
d. 74 + w = 3w – 6; 40 lb

15.
Paula sold 35 packages of wrapping paper for this year’s Booster Club fundraiser. This is one less than twice the number of packages that she sold last year. How many packages did Paula sell last year?

a. 17 packages
b. 16 packages
c. 20 packages
d. 18 packages ***

For question 16–18, write and solve an inequality.

16.
Kelvin and Marsha are going to dinner and a movie this evening. Kelvin wants to have at least $70 cash in his wallet. He currently has $10. How much money, x, does Kelvin need to withdraw from the bank?

a. x + 10 > 70; x > $60
b. x + 10 ≥ 70; x ≥ $60 ***
c. x + 10 < 70; x < $60
d. x + 10 ≤ 70; x ≤ $60

Respuesta :

1 is correct 
2 is correct 
3 is correct 
4 is correct 
5 is correct 
6 is correct 
7 is correct
8 is wrong it should be because you wouldn't add the  you would subtract it and the otehr number is a negative so it would be x=-26
9 is correct 
10 is correct 
13 is correct
14 I think is correct
I think 15 is incorrect because if he says one less than twice the number of last year then I think you first shoudl subtract 1 from 25 and then divide by 2 this would give you  17 packeges
and I think 16 is correct too..

Hope this helped
1-7 are correct
8 is wrong
9-14 are correct
I think 15 is incorrect because if he says one less than twice the number of last year then I think you first shoudl subtract 1 from 25 and then divide by 2 this would give you  17 packeges
and I think 16 is correct too..
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