Solve.0.5% of what number is 6.5?
A. 1300
B. 650
C. 780
D. 2600
Answer: A
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Solve the equation.3x + 23 = 2x + 100
A. 77 B. 76 C. 125 D. 123
Identify whether the equation, when graphed, will be a parabola, circle, ellipse, or hyperbola.x2 = 4y2 + 4
A. ellipse B. circle C. hyperbola D. parabola
Use a system of linear equations to solve the problem.A flat rectangular piece of aluminum has a perimeter of 60 inches. The length is 14 inches longer than the width. Find the width.
A. 36 in. B. 30 in. C. 22 in. D. 8 in.
Solve the problem.The wind is blowing at 10 knots. Sailboat racers look for a sailing angle to the 10-knot wind that produces maximum sailing speed. This situation is now represented by the polar graph in the figure shown below. Each point (r, ?) on the graph gives the sailing speed, r, in knots, at an angle ? to the 10-knot wind. What angle to the wind produces the maximum sailing speed? What is the speed to the nearest knot, of the sailboat sailing at 30° angle to the wind? 
A. 120°; 8 knots B. 120°; 3 knots C. 30°; 3 knots D. 30°; 5 knots