Multiply.(-0.9)(4.74)
A. -0.4266
B. -42.66
C. -4.266
D. -0.04266
Answer: C
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Solve the problem.The area of the playing surface of the tennis court shown is 
square feet. If its width is 
feet, find its length.
A. (48x + 8) feet B. (6x - 8) feet C. (36x2 + 42x + 8) feet D. (6x + 8) feet
Rotate the axes so that the new equation contains no xy-term. Discuss the new equation.17x2 - 12xy + 8y2 - 68x + 24y -12 = 0
A. ? = 63.4°
x'2 = -16y'
parabola
vertex at (0, 0)
focus at (0, -4)
B. ? = 63.4°
+ 
= 1
ellipse
center at (
, - 
)
major axis is x'-axis
vertices at (4 + 
, - 
) and (-4 + 
, - 
)
C. ? = 26.6°
+ 
= 1
ellipse
center at (0, 0)
major axis is y'-axis
vertices at (0, ±4)
D. ? = 63.4°
- 
= 1
hyperbola
center at (0, 0)
transverse axis is the x'-axis
vertices at (±4, 0)
Solve the problem.A stone is dropped from a tower that is 750 feet high. The formula 
describes the stone's height above the ground, h, in feet, t seconds after it was dropped. What is the stone's height 5 seconds after it is released?
A. 350 ft B. 375 ft C. 325 ft D. 360 ft
Solve the problem.A famous golfer tees off on a straight 380 yard par 4 and slices his drive to the right. The drive goes 280 yards from the tee. Using a 7-iron on his second shot, he hits the ball 160 yards and it lands inches from the hole. How many degrees (to the nearest degree) to the right of the line from the tee to the hole did he slice his drive?
A. 117° B. 41° C. 22° D. 52°