2. Solve. 8x – 4 = 7x
A) 5 B) –4 C) –5 D) 4
3. Solve. –7x + 1 + 8x = x + 1
A) Identity B) No solution C) 1 D) 0
4. A home purchased for $300,000 depreciated 8% over a 1-year period. What was the value of the home after at the end of the year?
A) $274,000 B) $278,000 C) $272,000 D) $276,000
5. Is –5 a solution to the equation 9 – 8x = 49?
A) No B) Yes
6. Solve. (x/6) – 1 = 5
A) 36 B) 31 C) –31 D) –36
7. Solve. 10x – 0.62 = 9(x – 0.95)
A) –8.14 B) –7.79 C) –7.59 D) –7.93
8. Solve. 8x – 1 – x = 7x + 1
A) No solution B) 0 C) 1 D) Identity
9. Solve. 4(7x + 10) = 3(9x – 5) + 20
A) 5 B) –5 C) 35 D) –35
10. Solve. 4(x + 2) – 3x = x – 6
A) No solution B) 0 C) 1 D) Identity
11. Identify the amount in the statment "140 is 28% of 500."
A) 28% B) 500 C) 140
13. The perimeter of a rectangle is to be no greater than 300 in., and the length must be 125 in. Find the maximum width of the rectangle.
A) 25 in. B) 175 in. C) 20 in. D) 50 in.
14. A principal of $5000 was invested in a savings account for 4 years. If the interest earned for the period was $400, what was the interest rate?
A) 2.5% B) 2% C) 1% D) 1.5%
16. Solve. 6x + 4(3x – 2) = 6x + 2
17. Convert 9/16 to a percent.
18. Enrique puts 12% of his monthly paycheck in an IRA. If he invests $72 in his IRA, how much was his paycheck?
19. The length of a rectangular garden is 8 ft less than 2 times its width. If the perimeter of the garden is 44 ft, find the dimensions of the garden.
20. If the perimeter of a rectangle is 18 ft and the width is 5 ft, find its length. [Hint: The perimeter of a rectangle is given by P = 2L + 2W.]
21. Graph the solution set of x > 3.
22. Solve. x/2 = –1
23. Solve. 8 – (4x – 3) = 19
24. What interest will you pay on a $7900 loan for 1 year if the interest rate is 11%?
25. Find the mean.
3, 4, 7, 11, 15