Find the appropriate property for the statement.-3 + (6 + 7) = (-3 + 6) + 7
A. Distributive property
B. Identity property
C. Commutative property
D. Associative property
Answer: D
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Simplify.
A. 40 B. -9 C. not a real number D. 9
Solve the problem.In economics, functions that involve revenue, cost and profit are used. Suppose R(x) and C(x) denote the total revenue and the total cost, respectively, of producing a new high-tech widget. The difference 
represents the total profit for producing x widgets. Given R(x) = 60x - 0.4 x2 and 
find the equation for P(x).
A. P(x) = -0.4 x2 + 63x + 13 B. P(x) = 3x + 13 C. P(x) = -0.4 x2 + 57x - 13 D. P(x) = 60x - 0.4 x2
Add.30 + 300 + 80
A. 310 B. 41 C. 113 D. 410
Find the LCD for the rational expression.
, 
, 
A. 3x(x + 8)(x - 8) B. x(x + 8)(x - 8) C. 24x(x + 8)2(x - 8) D. 24x(x2 + 8)(x2 - 8)