Solve the problem.A roller mechanism follows a path described by y = 
, where units are in feet. If 
find the magnitude and direction of the velocity (in ft/s) at the point 
A. 4.0 ft/s, 63°
B. 4.5 ft/s, 77°
C. 4.5 ft/s, 63°
D. 4.0 ft/s, 77°
Answer: B
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Write the equation in its equivalent exponential form.2 = log5x
A. x2 = 5 B. 52 = x C. 25 = x D. 5x = 2
For medium-sized dog breeds, the predicted adult weight, in pounds, of a puppy that weighs w pounds at age a weeks is given by the function
?
.
?
Use functional notation to express the predicted weight of a puppy that weighs 3.00 pounds at age 7 weeks. Then calculate that value.
?
A. Functional notation: 
. Value is 22.29 pounds.
B. Functional notation: 
. Value is 121.33 pounds.
C. Functional notation: 
. Value is 7 pounds.
D. None of the above.
Solve the problem.A promotional deal for long distance phone service charges a $15 basic fee plus $0.05 per minute for all calls. If Joe's phone bill was $46 under this promotional deal, how many minutes of phone calls did he make? Round to the nearest integer, if necessary.
A. 1220 min B. 6 min C. 2 min D. 620 min
Solve.The volume of a gas varies inversely as the pressure and directly as the temperature (in degrees Kelvin). If a certain gas occupies a volume of 2.3 liters at a temperature of 
and a pressure of 
per square centimeter, find the volume when the temperature is 
and the pressure is 
per square centimeter.
A. 30.7 L B. 50.2 L C. 5.1 L D. 1.0 L