Write an equation in slope-intercept form for the line shown.
A. y = 
x - 3
B. y = 2x + 3
C. y = 
x + 3
D. y = 2x - 3
Answer: A
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Solve the problem. Round your answer, if appropriate.As the zoom lens in a camera moves in and out, the size of the rectangular image changes. Assume that the current image is 8 cm × 5 cm. Find the rate at which the area of the image is changing (dA/df) if the length of the image is changing at 0.7 cm/s and the width of the image is changing at 0.3 cm/s.
A. 11.8 cm2/sec B. 5.9 cm2/sec C. 14.2 cm2/sec D. 7.1 cm2/sec
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 150° angle to the wind? 
A. 150°; 6 knots B. 120°; 6 knots C. 150°; 8 knots D. 120°; 8 knots
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = 
- 3
A. 
B. 
C. 
D. 
Solve and graph.x2 - 2x - 35 < 0
A. x < -5
B. -5 > x > 7
C. x > 7
D. -5 < x < 7