Factor the expression. Express your answer so that only positive exponents occur. x-2/7 - x-4/7
A. x-4/7(x2/7 + 1)
B. x-4/7(x2/7)
C. x-4/7(x2/7 - x)
D. x-4/7(x2/7 - 1)
Answer: D
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Use a finite sum to estimate the average value of the function on the given interval by partitioning the interval and evaluating the function at the midpoints of the subintervals.f(x) = 
on 
divided into 5 subintervals
A. 
B. 
C. 
D. 
Find the present value. Round to the nearest cent.To get $6500 after 2 years at 11% compounded quarterly
A. $1268.11 B. $5375.77 C. $5275.55 D. $5231.89
Provide an appropriate response.Fill in the blank to make the trinomial a perfect square: x2 + 5x + 
A. 0
B. - 
C. - 
D. 
Solve the problem.The polynomial -0.2t2 + 12t describes the average number of digits that participants in a memorization experiment were able to recall after t minutes. Find the number of digits recalled after 7 minutes. Round to the nearest digit.
A. 114 digits B. 54 digits C. 94 digits D. 74 digits