Friday
January 30, 2015

Homework Help: AlgebraB-2

Posted by Jennifer W. on Wednesday, March 20, 2013 at 1:57pm.

I need help with figuring out how to do these problems to get the right answer. Appreciate any help. Thanks.


Multiple choice:
1. What is the value of n so that the expression x + 12x + n is a perfect square trinomial?

6
36
72
144

2. What are the solutions of the equation x2 + 4x = 96?

2, 48
12, 8
2, 48
12, 8

3. What are the solutions of the equation x2 + 14x = 130?

2, 16
10, 13
2, 16
no solution

4. A rocket is launched from atop a 105-foot cliff with an initial velocity of 156 ft/s. The height of the rocket above the ground at time t is given by h = 16t2 + 156t + 105. When will the rocket hit the ground after it is launched? Round to the nearest tenth of a second.

4.9 s
9.8 s
0.6 s
10.4 s

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