Find an equation of the parabola described.Vertex at (0, 0); axis of symmetry the x-axis; containing the point (7, 8)
A. x2 = 
y
B. x2 = 
y
C. y2 = 
x
D. y2 = 
x
Answer: D
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Solve the problem.Police use a formula s = S 
, where S is the test-car speed and L is the test-skid length, to find the actual speed s in an accident which left a skid mark of l. Find the speed (nearest tenth) when 
A. 67.5 mph B. 95.0 mph C. 36.9 mph D. 55.1 mph
Use an equation to solve the problem.The average price of homes in one neighborhood decreased 8% since last year, a drop of $5,400. What was the average price of a home last year?
A. $64,500 B. $69,500 C. $68,500 D. $67,500 E. $71,500
Find the midpoint of the line segment joining the points P1 and P2.P1 = (2, 6); P2 = (8, 3)
A. (5, 
)
B. (-6, 3)
C. (
, 5)
D. (10, 9)
For the given functions f and g, find the requested composite function.f(x) = -3x + 2, g(x) = 6x + 2;
Find the function g ? f.
A. -18x + 8 B. -18x - 10 C. -18x + 14 D. 18x + 14