Use a graphing calculator to approximate the vertex of the graph of the parabola defined by the following equation.y = x2 + 2x - 6
A. (1, -7)
B. (-1, -7)
C. (1, 7)
D. (-1, -6)
Answer: B
Mathematics
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Find the real solutions, if any, of the equation. Use the quadratic formula.9x2 - 36x + 36 = 0
A. 
B. no real solution
C. 
D. 
Mathematics
Write an equation of the line passing through the given points.(4, -30) and (10, -78)
A. y = 
x - 
B. y = -8x + 2
C. y = 8x - 62
D. y = - 
x - 
Mathematics
Perform the indicated operation.(-8x)3
A. -24x3 B. 512x3 C. -512x3 D. 24x3
Mathematics
Solve the problem.Julie and Eric row their boat (at a constant speed) 21 miles downstream for 3 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 7 hours. Find the rate of the current.
A. 5 mph B. 2 mph C. 1.5 mph D. 3 mph
Mathematics