Question

3(x + 1)= -2(x- 1)- 4

Answer 1

are you solving for x?

Answer 2

3x + 3 = -2x + 2 - 4
5x= -5
x = -1

Answer 3

thanks

Answer 4

A social networking site recorded that 80% of the people who became members of the site one month were between 30 and 40 years old. The equation below represents this information, where x represents the total number of people who became members of the site that month.

x = 0.8x + 72

How many people who became members of the site that month were between 30 and 40 years of age?

112

288

360

432



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Question 4 (Multiple Choice Worth 1 points)

(02.01)

The triangle below has a total perimeter of 450 cm2.



Write an equation and solve it to find the length of the longer side of the rectangle.

128x + 150 = 450; x = 2.34 cm

x + 278 = 450; x = 172 cm

2x + 278 = 450; x = 86 cm

150x + 128 = 450; x = 2.15 cm



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Question 5 (Multiple Choice Worth 1 points)

(02.01)

Solve for x: = 3x

x = -7

x = -13

x = 8

x = 2



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Question 6 (Multiple Choice Worth 2 points)

(02.01)

Connie has saved up $15 to purchase a new CD from the local store. The sales tax in her county is 5% of the sticker price. Write an equation and solve it to determine the value of the highest priced CD Connie can purchase with her $15, including the sales tax. Round your answer to the nearest penny.

x + 0.05x = 15; x = $14.29

x - 0.05x = 15; x = $15.79

0.5x = 15; x = $30

5x = 15; x = $3.00



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Question 7 (Fill-In-The-Blank Worth 2 points)

(02.01)

Solve for x: x + = 2x

x = __________________ Write your answer as a fraction in simplest form. Use the "/" symbol for the fraction bar.

Answer for Blank 1:




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Question 8 (Multiple Choice Worth 1 points)

(02.01)

Solve for x: -3(x + 3) = -3(x + 1) - 5.

6

-6

All real numbers

No solution