Pre-Algebra Final Exam Review

Evaluating Expressions

100

15 + 3[(5-1)(7-2)2 - 4]

123

200

3² + 2[2(2³ - 7) + 4]

21

300

-5 - 2² -2 + (3 X 2) + (-3)

-8

400

qr +r² if q = -0.5 and r = -6

39

500

-[bp - (-b)] if b = -3 and p = 2

9

Writing and Solving Equations

100

Solve for x: 22x - 9 = 57

x = 3

200

Solve for y: 35y - 19 = 51

y = 2

300

Solve for x: 18x + 14 = -27

x = -41/18

400

Solve for x: -5x - 18 = 32

x = -10

500

If 3x - 9 = 6, what is the value of 2x - 6?

4

Word Problems

100

The ratio of futons to sofas in the showroom was 3 to 2. If there were 15 futons in the showroom, how many sofas were in the showroom?

10 sofas

200

Three fourths of the fans did not carry banners. If 1000 fans attended the game, how many fans carried banners?

250 fans carried banners

300

Couscous costs $4.50 for a 3 pound bag at the local market. At the Mega-Mart, couscous costs $14 for an 8 pound bag. Find both unit prices. Which store has the better buy?

Local market = $1.50/1 lb; Mega-Mart = $1.75/1 lb.; Local market has the better buy.

400

A number was multiplied by -4 and then -6 was added. If the final result was -23, what was the number?

17/4

500

Seven times the opposite of a number is 50 less than the product of 3 and the number. What is the number?

5