Simplify the polynomial by adding or subtracting, as indicated. Express your answer as a single polynomial in standard form.(9x5 - 14x2) - (-11x5 + 8x2)
A. 20x5 - 6x2
B. -2x5 - 6x2
C. -2x7
D. 20x5 - 22x2
Answer: D
Mathematics
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Solve the problem.The value (in thousands of dollars) of a certain car is given by the function V = 
, where t is measured in years. Find a general expression for the instantaneous rate of change of V with respect to t.
A. 
B. - 
C. - 
D. - 
Mathematics
Determine if the graph of the function is concave up or concave down.y = -(x + 5)2 - 3
A. Concave down B. Concave up
Mathematics
Use the change of base formula to approximate the logarithm to four decimal places.log5.1 4.4
A. 1.0996 B. 0.9094 C. 0.6435 D. 0.8627
Mathematics
Write the improper fraction as a mixed or whole number.
A. 26
B. 
C. 296
D. 296
Mathematics