Solve.The monthly cost of a certain long distance service is given by the formula 
where C is in dollars and t is the amount of time in minutes called in a month. Find the cost of calling long distance for 60 minutes in a month.
A. $9.95
B. $4.80
C. $8.75
D. $7.75
Answer: C
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?Find the volume of a rectangular solid of dimension: 7" by 4" by 8", if a cube of dimension: s = 2" is cut out of it.
A. ?V = 224 in3 B. ?V = 216 in3 C. ?V = 222 in3 D. V? = 224 in3 E. ?None of the above.
First, rewrite each equation in exponential form. Then, use a table of coordinates and the exponential form to graph the logarithmic function. Begin by selecting -2, -1, 0, 1 and 2 for y. Finally, based on your graph, describe the shape of a scatter plot that can be modeled by f(x) = log b x, 0 < b < 1.y = log1/2 x
A. 
decreasing,
although rate of decrease is slowing down
B. 
increasing
C. 
increasing,
although rate of increase is slowing down
D. 
decreasing,
although rate of decrease is slowing down
Solve the equation by completing the square.x2 + 8x = 7
A. {-1 - 
, -1 + 
}
B. {-4 - 
, -4 + 
}
C. {-4 - 1
, -4 + 1
}
D. {4 + 
}
Solve the problem.For a motorcycle traveling at speed v (in mph) when the brakes are applied, the distance d (in feet) required to stop the motorcycle may be approximated by the formula 
Find the instantaneous rate of change of distance with respect to velocity when the speed is 40 mph.
A. 10 mph B. 5 mph C. 41 mph D. 4 mph