Page 643 - Algebra 1

Practice Distributed and Integrated
Addorsubtract.
(90)
*3.
(94)
*4.
(94)
5.
(88)
6.
(89)
2.
6
__ _
m-4 m-4
Write Explain why some absolute-value equations have no solutions.
Multiple Choice The solution set {-12, 60} correctly solves which absolute-value equation?
_2 _ 1. m - 16
-6
w
A 6 _x - 1 = 42 ⎪4 ⎥
C8_x-2 =48 ⎪3 ⎥
B -2 _x - 1 = 16 ⎪4 ⎥
D-5_x-4 =-30 ⎪6 ⎥
+
(90) w2 -w-30 w-6
Refurbishing _Rudy has x + y junk cars in his lot. He fixes them up and sells each car for $400 + $100x . If he sells 30% of them, how much profit will he make?
y
Physics The function y = -16x2 + 80x models the height of a droplet of water
from an in-ground sprinkler x seconds after it shoots straight up from ground level. Explain how you know when the droplet will hit the ground.
Factor.
7. 2a2 +8ab+6a+24b
(87)
8. zx10 - 4zx9 - 21zx8 (79)
(93) student set their problem up correctly? Explain the error.
Simpl_ify.
b-4 2 _
b + 9 · (b + 11b + 18).
*10. Error Analysis Students were asked to simplify (15x4 + 4x2 + 3x3) ÷ (x - 6). Which
9. Find the product of (88)
Student A
(x-6) (15x4 +4x2 +3x3)
Student B
(x-6) (15x4 +3x3 +4x2 +0x+0)
*11.
(92)
12.
(92)
10x - 10 _-1
x5 10x2 - 10
628
Saxon Algebra 1
_2x 3x + 12
__
6x2 __
x2 +8x+16