Alg 1 chapter 2

1 & 2 Step Equations

100

   n + 3 = 5

2

200

n - 4 = -9

n = -5

300

-5n = 35

n = -7

400

n/-4 = -7

n = 28

500

-3n + 18 = -36

n = 18

Multi Step Equations

100

2(x + 8) = -24

x = -20

200

7m + 21 = 10m - 18

m = 13

300

3x - 18 + 12 = 6

x = 4

400

3x - 12 - 7x = -24

x = 3

500

6(3a + 1) - 30 = 3(2a - 4)

a = 1

Solve for Variable

100

Solve for a.        

a + b = c

a = c - b

200

Solve for a.

ab = d

a = b/d

300

Solve for a.

a - r = m

a = m + r

400

Solve for a .

a/r = t

a = rt

500

Solve for a 

2(a + b) = r

r/2 - b

Tax and Discount

100

original: 78

new: 125

Percent of change

60% increase

200

original $1

new $24

Percent of Change?

41% decrease

300

dress:  $22.50

sales tax: 7.5%

Total Price?

$24.19

400

Guitar: $95.00

discount: 15%

Total Price?

$80.75

500

Board Game:  $25.00

discount 15%

sales tax 7.5%

$22.84

Absolute Value

100

a = -2  b = -3 c = 2

4a - |3b + 2c|

-13

200

|x - 12| = -6

no solution

300

b = -3 c = 2

3|3b - 8c| - 3

72

400

|4x - 8| = 20

{7,-3}

500

x = 2.1,  z = -4.2,    b = -3

|2x - z| + 6b

-9.6