Solve the problem.Find an equation in general form for the line graphed on a graphing utility. 
A. 2x + y = -1
B. x + 2y = -2
C. y = -2x - 1
D. y = - 
x - 1
Answer: B
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Solve the given applied problems involving variation.The time in hours it takes a satellite to complete a circular orbit about the earth varies directly as the radius (from the center of the earth) of the orbit and inversely as the orbital velocity. If a satellite completes an orbit src="https://sciemce.com/media/4/ppg__text0424191335__f1q21g4.jpg" alt="" style="vertical-align: -4.0px;" /> (Assume the radius of the earth is 
above the earth in 
at a velocity of 
how long would it take a satellite to complete an orbit if it is circling 1700 km above the earth at 
A. 580 min
B. 120 min
C. 220 min
D. 190 min
Solve.A boat goes 150 miles downstream in the same time it can go 100 miles upstream. The speed of the current is 8 miles per hour. Find the speed of the boat in still water.
A. 32 mph B. 48 mph C. 40 mph D. 25 mph
Answer the question about the given function or graph of a function. 
Find any local minimum of f.
A. Local minimum of -3.3 at x = -2.5 and local minimum of -2.5 at x = 5 B. Local maximum of -3.3 at x = -2.5 and local maximum of -2.5 at x = 5 C. Local minimum of -2.5 at x = -3.3 and local minimum of 5 at x = -2.5 D. Local maximum of -2.5 at x = -3.3 and local maximum of 5 at x = -2.5
Multiply.(
- 9)(9 + 
)
A. 81 - m
B. m - 
+ 81
C. m - 81
D. m - 18
- 81