Solve the problem.The total sales in dollars of some small businesses fluctuates according to the equation 
where x is the time in months, with 
corresponding to January, 
and 
Determine the month with the greatest total sales and give the sales in that month.
A. March; $12,700
B. June; $8500
C. December; $12,700
D. September; $4300
Answer: A
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By calculating an appropriate number of terms, determine if the series converges or diverges. If it converges, find the limit L and the smallest integer N such that 
for 
otherwise indicate divergence.an = n cos 
A. L = 0, N = 37 B. L = 1, N = 28 C. L = 0, N = 28 D. diverges
Use the circle graph to solve the problem.A survey of the 4032 vehicles on the campus of State University yielded the following circle graph.
What percent of the vehicles are hatchbacks?
A. 9% B. 35% C. 141% D. 23%
Write the expression in radical notation. Evaluate by hand when possible.-2561/4
A. 
; -4
B. -
; -4
C. -
; -16
D. -
; -64
Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 