Find the value(s) of the variable for which the rational expression is undefined.
A. 0
B. 4
C. none
D. -4
Answer: D
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Solve the problem. Use an annual percentage rate table if necessary.A retired couple buys a new recreational vehicle (RV) for $54,000. They make a down payment of $13,000 and finance the balance at 9.0% APR over 60 months. Before making the 30th payment, the couple decides to pay the remaining balance on the loan. How much interest will the couple save (use the actuarial method)?
A. $3074.14 B. $3613.77 C. $2711.85 D. $2743.79
One solution of a polynomial equation is given. Use synthetic division to find any remaining solutions.4x4 + 3x3 - 65x2 - 48x + 16 = 0; -4
A. -4, 1, - 
B. -4, 1, 
C. 4, -1, 
D. 4, 1, -1
Find the function value.Find -f(x) when f(x) = -3x + 1.
A. 3x + 1 B. -x - 1 C. 3x - 1 D. -3x - 1
Solve by the substitution method.7x + 9y = 143x + 7y = 6
A. {(2, 0)} B. {(1, 1)} C. {(x, y)|7x + 9y = 14} D. ?