Find the phase shift of the function.y = 4 cos 
A. 
units to the right
B. 
units to the left
C. 
units to the left
D. 
units to the right
Answer: B
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Simplify. Combine like terms if possible.-8n - (-n)
A. -9n B. -7n2 C. -7n D. -8n2
Solve.Sue wants to put a rectangular garden on her property using 76 meters of fencing. There is a river that runs through her property so she decides to increase the size of the garden by using the river as one side of the rectangle. (Fencing is then needed only on the other three sides.) Let x represent the length of the side of the rectangle along the river. Express the garden's area as a function of x.
A. A(x) = 38x - 
x2
B. A(x) = 38x2 - x
C. A(x) = 39x - 2x2
D. A(x) = 37x - 
x2
Solve the problem.Tracey bought a diamond ring appraised at $1400 at an antique store. If diamonds have appreciated in value at an annual rate of 
what was the value of the ring 8 years ago? (Round your answer to the nearest dollar.)
A. $332 B. $2790 C. $681 D. $703
Find the sum of the sequence.
A. 66 B. 132 C. 90 D. 42