Multiply the rational expressions. Simplify, if necessary.
? 
A. - 
B. - 
C. - 
D. 
Answer: A
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Subtract. Combine like terms, and write the answer in descending order.(-4c2 - 5c - 3) - (4c2 + 5c + 7)
A. -8c2 + 4 B. -8c2 + 10c + 10 C. 4 D. -8c2 - 10c - 10
Find the equation in general form of the circle with center at the origin and 
.
?
A. 
B. 
C. 
D. 
E. 
Find approximate x-intercepts. Round the coordinates to the nearest tenth if necessary.y = 2x2 + 6x - 80
A. (-5, 0), (-8, 0) B. (5, 0), (8, 0) C. (5, 0), (-8, 0) D. (-5, 0), (8, 0)
The San Francisco cable cars travel by clamping onto a steel cable that circulates in a channel beneath the streets. This cable is driven by a large 14-foot-diameter pulley, called a sheave (see the figure). The sheave turns at a rate of 17 revolutions per minute. Find the speed of the cable car, in miles per hour (rounded to three significant digits), by determining the linear velocity of the cable. (1 mi = 5,280 ft).
?
?
A. 8.92 mph B. 8.78 mph C. 8.50 mph D. 7.65 mph E. 7.93 mph