Solve.The number of students in a school in year n is estimated by the model
. About how many students are in the school in each of the first three years?
A. 117, 147, 201
B. 109, 147, 201
C. 123, 161, 215
D. 109, 147, 177
Answer: B
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Evaluate the improper integral.
A. 
B. 
C. 
D. 
Solve the problem.The profit that the vendor makes per day by selling x pretzels is given by the function 
Find the number of pretzels that must be sold to maximize profit.
A. 400 pretzels B. 200 pretzels C. 100 pretzels D. 800 pretzels
Find the turnover rate at cost and at retail. Round to the nearest hundredth.
A. Turnover rate at cost: 2.49, Turnover rate at retail: 5.01 B. Turnover rate at cost: 3.50, Turnover rate at retail: 3.56 C. Turnover rate at cost: 3.56, Turnover rate at retail: 3.50 D. Turnover rate at cost: 1.43, Turnover rate at retail: 1.41
Find the foci of the ellipse whose equation is given.9(x - 1)2 + 36(y + 2)2 = 324
A. foci at (- 3
, -2) and (3
, -2)
B. foci at (1 + 3
, 1) and (1 - 3
, 1)
C. foci at (1 + 3
, -2) and (1 - 3
, -2)
D. foci at (-2 + 3
, 1) and (-2 - 3
, 1)