Multiply.(4a - 10b)(4a + 12b)
A. 16a2 + 48ab - 120b2
B. 16a2 + 8ab + 8b2
C. 16a2 + 8ab - 120b2
D. 16a2 - 40ab - 120b2
Answer: C
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Solve the problem.Solve for a: 
A. a = 
B. a = 
C. a = 
D. a = 
At the given point, find the slope of the curve or the line that is tangent to the curve, as requested.5x2y - ? cos y = 6?, tangent at (1, ?)
A. y = -2?x + ?
B. y = - 
x + 
C. y = ?x
D. y = -2?x + 3?
Use a graphing utility to find or approximate the x-intercepts of the graph of the quadratic function.y = x2 + 6x + 8
A. (12, 0), (-4, 0)
B. (-2, 0), (-4, 0)
C. (
, 0) (- 
, 0)
D. (2, 0), (4, 0)
Find the expected value.A fair coin is tossed three times, and a player wins $3 if 3 tails occur, wins $2 if 2 tails occur and loses $3 if no tails occur. If one tail occurs, no one wins. What is the expected value of the games?
A. $0.75 B. $2.00 C. -$3.00 D. $3.00