Chapter 2 Pre Test

1. x – 9 = x = Step 5

x = x = Step 6 Step 7

( ) x = x = 75 5 ( ) 5 3. Step 2

3 3x – 9 = 6 3 x = 5 3x = Step 5Step 6 Step 7

2 7x – 3 = 5x x = 7 2x = x -5x 5. Step 4 Step 5Step 6 Step 7

2 7x + 1 – 5x + 3 = 12 2 x = 4 2x = x = Step 3 Step 5Step 6 Step 7

7. 2.3x – 3.7 = 2.9x – x – 3.7 = 2.9x – x = 6 - 6x = x -29x 10( )10( )10( )10( ) 23x – 37 = 29x – 73 Step 2 Step 4 Step 5Step 6 Step 7

10 2(4x – 5) – 6 = 8 – 2(x – 8) 10 10x = x +2x 8x 8x – 16 x = 4 = 24 – 2x – 10 = 8– 2x – Step 1 Step 3 Step 4Step 5 Step 6 Step 7

Step 5Step 6 Step x + = x ( ) x -3 -8x -8x x = 3 ( ) x = - 12 LCD = – 3 x 3 2x 4 3 – = =8x – 9 Step 2 Step 4

- 1 -2x – ( ) 10. = ( ) x x x = – ( ) x = - 3 (x + 1) x = 4 x + 2 x LCD = 4 = 2x – 2 Step 1 Step 2 Step 4Step 5 Step 6 Step 7

x – + = x x x -12x x = - 3 LCD = x 2 1 = + – 3 – 3+ 6 = 12x x 4x + 3 = 12x x =  ( ) Step 2 Step 3 Step 4Step 5 Step 6 Step 7

12. = 5 ( ) x – x = ( ) 3 (x – 6) = 3 x – 5 LCD = 3 = 15 Step 1 Step 3 Step 5 2

13.Solve for y x – 5y = y = - 4x x -4x y = - 4x y = – x Step 4 Step 6 Step 7

5 4 (5) 14. Go back to question and answer 13 and find y when x = 5. y = 4 – 2 y = 2 y = – x 1

15.Solve for d π C = πd π d = C π Step 6

16.Go back to question and answer 15 and find d when C = 314 and π = 3.14 d = C π d = 100

Chapter 2 Pre Test