Graph the function.y =
cos
x 
A.
B.
C.
D.
Answer: B
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Find the limit of the sequence if it converges; otherwise indicate divergence.an = (-1)n
A. 0 B. 1 C. 8 D. Diverges
Solve.The population of a town was 27,100 at the beginning of 1970. If the population decreased 300 people per year, how many people lived in the town at the beginning of 1985?
A. 22,600 B. 22,300 C. 4500 D. 22,900
Find the x-intercepts of the graph of each equation.y = 9x2 + 30x + 25
A. ,
B. ,
C. ,
D. ,
Solve the problem.An appliance store sells two types of refrigerators. Each Cool-It refrigerator sells for $640 and each Polar sells for $740. Up to 350 refrigerators can be stored in the warehouse and new refrigerators are delivered only once a month. It is known that customers will buy at least 60 Cool-Its and at least 100 Polars each month. How many of each brand should the store stock and sell each month to maximize revenues?
A. 60 Cool-Its and 290 Polars B. 310 Cool-Its and 195 Polars C. 250 Cool-Its and 100 Polars D. 75 Cool-Its and 275 Polars