Factor the expression completely. If the polynomial is prime, state this as your answer.25x2 + 49y2
A. (5x + 7y)(5x - 7y)
B. (5x - 7y)2
C. (5x + 7y)2
D. prime
Answer: D
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Evaluate the iterated integral. Select the correct answer.
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Solve the problem.A student earned scores of 85, 83, 90, 94, 88, and 84 on the first six tests in a biology class. What score is needed on the seventh test to produce an 86 average?
A. 80 B. 78 C. 81 D. 79
Identify the domain and then graph the function.f(x) = 
; use the following table.
A. [-3, ?)
B. [3, ?)
C. [0, ?)
D. [0, ?)
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 x = 1 corresponding to January, 
and 
Determine the month with the greatest total sales and give the sales in that month.
A. September; $3300 B. June; $6100 C. December; $8900 D. March; $8900