Evaluate the exponential form.63
A. 18
B. 216
C. 9
D. 4
Answer: B
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Find the focus and the directrix of the parabola.y = 2x2 - 8x + 7
A. Focus: 
; directrix: y = - 
B. Focus: 
; directrix: y = - 
C. Focus: (2, 7); directrix: x = 9
D. Focus: (2, 1); directrix: x = -3
Use the multiplication property of inequality to solve the inequality and graph the solution set on a number line.
? -4
A. [-20, ?)
B. (-20, ?)
C. (-?, -20]
D. (-?, -20)
Solve the problem.Given that P(A) = 0.29 and P(B) = 0.22, find P(A ? B) if A and B are mutually exclusive.
A. 0.0638 B. 0 C. 0.51 D. 0.4462
Solve the problem.A coin is tossed upward from a balcony 188 ft high with an initial velocity of 32 ft/sec. During what interval of time will the coin be at a height of at least 60 ft? (h = -16t2 + vot + ho.)
A. 0 ? t ? 1 B. 3 ? t ? 4 C. 0 ? t ? 4 D. 4 ? t ? 8