Simplify the expression.
- 8
A. -2x
B. 2x
- 8x
C. -30x
D. 2x
- 32x
Answer: C
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Write the slope-intercept form of the equation for the line passing through the given pair of points.(9, 1) and (3, 1)
A. y = 1 B. x = 9 C. 3x + 9y = 0 D. 9x + 3y = 0
Solve the problem using a system of equations.Paul invested three times as much money in an account paying 7% interest than he did in an account paying 2% interest. If the total interest paid was $920, how much did he invest in each?
A. $12,000 at 7%, $4000 at 2% B. $4000 at 7%, $12,000 at 2% C. $12,000 at 7%, $4500 at 2% D. $120 at 7%, $40 at 2%
The displacement d (in meters) of an object at time t (in seconds) is given. Describe the motion of the object. What is the maximum displacement from its resting position, the time required for one oscillation, and the frequency?d = 5 sin 
A. simple harmonic; -5 m; 4 sec; 
oscillation/sec
B. simple harmonic; 5 m; 4 sec; 
oscillation/sec
C. simple harmonic; 5 m; 
sec; 4 oscillations/sec
D. simple harmonic; 5 m; 2 sec; 
oscillation/sec
Use properties of limits to find the indicated limit. It may be necessary to rewrite an expression before limit properties can be applied.
(3x2 - 2x + 2)2
A. -529 B. 529 C. 81 D. does not exist