Solve the problem.A flare fired from the bottom of a gorge is visible only when the flare is above the rim. If it is fired with an initial velocity of 
and the gorge is 672 ft deep, during what interval can the flare be seen?(h = -16t2 + vot + ho.)
A. 0 < t < 6
B. 18 < t < 19
C. 12 < t < 13
D. 6 < t < 7
Answer: D
Mathematics
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Multiply or divide as indicated.2 × (-1) × 3 × (-2)
A. 12 B. 8 C. -12 D. 1
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Solve the problem.Find the area of the right triangle ABC with A = (-2, 7), B = (7, -1), C = (3, 9).
A. 29 square units
B. 
square units
C. 58 square units
D. 
square units
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Specify the center and radius of the circle.5x2 + 5y2 + 50x + 30y + 150 = 0
A. center: (-5, -3); radius: 2 B. center: (3, 5); radius: 4 C. center: (5, 3); radius: 4 D. center: (-3, -5); radius: 2
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Decide if the given number is a solution to the given equation.3p + 4p - 3 = 11; 2
A. Yes B. No
Mathematics