Without graphing the function, determine its amplitude or period as requested.y = 5 cos 
xFind the amplitude.
A. 
B. 8?
C. 5
D. 
Answer: C
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For the power function 
, if x is multiplied by 2, then y is multiplied by 
.
Answer the following statement true (T) or false (F)
Multiply. Write the answer in lowest terms and as a whole or mixed number where possible.24 ? 
A. 15
B. 6
C. 18
D. 6
Solve the Problems.
A company invests equal amounts of money into two investments. One pays 7% and the other pays 8%. After one year the interest earned on the two investments is $3600. How much was invested in each?
Solve the problem.Given that the polar equation r = 
models the orbits of the planets, compare Earth's orbit relative to the sun with that of Pluto and describe the difference. For Earth, 
and 
For Pluto, 
and 
A. The orbits of Earth and Pluto are both circular, with the sun positioned at their centers, but the diameter of Pluto's orbit is about 40 times that of Earth. B. Earth circles the sun, but Pluto does not. C. Earth's orbit closely approximates a circle with the sun positioned at its center. Pluto's orbit is more elliptical with the sun positioned on its long axis about 10 astronomical units away from the center. D. Pluto's orbit closely approximates a circle with the sun positioned at its center. Earth's orbit is more elliptical with the sun positioned on its long axis about 10 astronomical units away from the center.