Find the amplitude or period as requested.Find the amplitude of y = -4 sin 
+ 3.
A. -12
B. 
C. 4
D. 3
Answer: C
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Solve the problem.Roberto invested some money at an APR of 8 percent, and then invested $4,000 more than twice this amount at an APR of 10 percent. His total annual income from the two investments was $4,600. How much was invested at 10 percent?
A. $30,000 B. $3,400 C. $34,000 D. $12,000
Find a rectangular equation for the plane curve defined by the parametric equations.x = 
, y = 2t + 5
A. y = 2x2 + 5
B. y = 2x2 - 5
C. y = 2
- 5, x ? 0
D. y = 2
+ 5, x ? 0
Solve for x.
= 22
A. -132 B. 13 C. 0 D. 11
List the elements in the sample space of the experiment.A box contains 10 red cards numbered 1 through 10. List the sample space of picking one card from the box.
A. None of these B. {10} C. {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} D. {100}