Simplify the algebraic expression.9x + 2x
A. 11x
B. 11 + x
C. 7x
D. -7x
Answer: A
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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. - 
Provide an appropriate response.Factor completely: 7x4 - 63x2
A. 7(x2 - 9)(x2 + 9) B. 7x2(x - 3)2 C. 7x2(x + 3)(x - 3) D. 7x2(x + 9)(x - 9)
Find the quotient and the remainder.7x2 + 33x - 54 divided by x + 6
A. 7x + 9; remainder 0 B. x - 9; remainder 0 C. 7x - 9; remainder 0 D. 7x - 9; remainder 9
Solve the equation. If the solutions involve square roots, give both the exact solutions and the approximate solutions to three decimal places.1 + 
= 
A. - 
, 
B. -6, 7
C. -7, 6
D. 6, 7