Simplify the expression. Write answer with positive exponents.
A. 
B. 310
C. 32
D. 
Answer: A
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Evaluate the expression.(-4)-1
A. -4
B. - 
C. 
D. 4
Factor completely, if possible.x2 - 8x - 48
A. (x - 4)(x + 1) B. (x + 4)(x - 12) C. Prime D. (x - 4)(x + 12)
Solve the problem.If an object is dropped from a tower, then the velocity, V (in feet per second), of the object after t seconds can be obtained by multiplying t by 32 and adding 10 to the result. Find V as a linear function of t, and use this function to evaluate V(6.3), the velocity of the object at time 
A. V(6.3) = 212.9 feet per second B. V(6.3) = 209.6 feet per second C. V(6.3) = 211.6 feet per second D. V(6.3) = 210.9 feet per second
Rewrite the equation in standard form. Find the center and radius of the circle.x2 + y2 - 20y + 99 = 0
A. x2 + (y - 10)2 = 1 center (0, 10), r = 1 B. x2 + (y - 10)2 = 1 center (0, -10), r = 1 C. (x - 10)2 + y2 = 1 center (10, 0), r = 1 D. x2 + (y + 10)2 = 1 center (0, -10), r = 1