Tell which signed number corresponds to the situation.Losing 21 cents
A. -21
B. +21
Answer: A
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Write the quadratic equation in standard form. Determine the values of a, b, and c.2x (x - 9) = (x + 7) (x - 5)
A. - x2 + 20x - 35 = 0 a = -1, b = 20, c = -35 B. x2 - 20x = 35 a = 1, b = -20, c = 35 C. - x2 + 20x = -35 a = -1, b = 20, c = -35 D. x2 - 20x + 35 = 0 a = 1, b = -20, c = 35
For the pair of functions, determine the domain of f + g.f(x) = 2x2 + 9, g(x) = 3x3 - 7
A. (0, ?) B. (-?, 0) or (0, ?) C. (-?, 0) D. (-?, ?)
Solve the problem.The function 
describes the volume of the box shown, in cubic inches, whose height is x inches. Factor the expression for V(x) and write the function in completely factored form. Use the factored form of the function to find 
A. V(x) = x(4x + 5)(x + 7); 510 in.3 B. V(x) = (4x2 + 7x)(x + 5); 456 in.3 C. V(x) = x(4x + 7)(x + 5); 456 in.3 D. V(x) = (4x2 + 5x)(x + 7); 510 in.3
Solve the problem.Last year the hatch-back model of a new car cost $19,952. This year's model costs $20,741. How much more does this year's model cost?
A. $39,693 B. $689 C. $40,693 D. $789