Chpt 3 Review

2 Step Equation

100

9b + 5 = 23

b = 2

200

11 = -5y - 4

y = - 3

300

3/2 m  + 2 = 20

m = 12

400

3t + 9t = 60

t = 5

500

- 110 = -4c - 6c

c = 11

Multi-Step

100

x + 5 - 4x = 8

x = -1

200

16h - 4(5h - 7) = 4

h = 6

300

4/3 (2b - 1) = -12

b = -4

400

6(2b + 10) = 5(b + 5)

b = -5

500

1/12(48 + 24b) = 2(17 - 4b)

b = 3

Proportions

100

5/7 = 20/r

r = 28

200

10 / 3m = -5 / 6

m = -4

300

n + 8  =  3        

5n-2       8

n = 10

400

5 - c  = 2c + 2   

  3            -4

c = - 13

500

A student can type 65 words in 2 minutes. How many words can the student type in 42 minutes?

1,365 words

Percents

100

42 is 40 % of what number

105

200

What number is 30% of 55?

16.5

300

What percent of 56 is 21?

37.5%

400

What percent of 60 is 18?

30%

500

7500 tickets were sold, 30% were for general admission.  How many general admission tickets were sold?

2,250 general tickets

Re-Write

100

V = LWH

Solve for h

H = V/LW

200

Write the equation so that y is a function of x:

8x = 2y - 18

y = 4x + 9

300

- 9x + 3y = 18

solve for y

y = 3x + 6

400

4x = -2y + 26

solve for y

y= -2x + 13

500

4y - 10x = 20 - y

solve for y

y = 2x + 4