Solve the problem.A man rode a bicycle for 12 miles and then hiked an additional 8 miles. The total time for the trip was 5 hours. If his rate when he was riding a bicycle was 10 miles per hour faster than his rate walking, what was each rate?
A. Bike: 12 mph
Hike: 2 mph
B. Bike: 11.5 mph
Hike: 1.5 mph
C. Bike: 14.5 mph
Hike: 4.5 mph
D. Bike: 13 mph
Hike: 3 mph
Answer: A
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Find the inverse of the given function.y = 3x
A. y = 
B. y = 
C. y = - 
D. y = -3x
Determine the values of the given functions as indicated rounded to four decimal places. Find sin 15° by using 15° = 60° - 45°.
A. 0.2679 B. 0.9659 C. 0.7071 D. 0.2588
Solve the problem. Approximate to the nearest tenth when necessary.The area of a circle is 65? square centimeters. Find the radius of the circle.
A. 65 cm B. 4.5 cm C. 8.1 cm D. 14.3 cm
Solve the problem.The chart represents the amount of fuel consumed by a machine used in manufacturing. The machine is turned on at the beginning of the day, takes a certain amount of time to reach its full power (the point at which it uses the most fuel per hour), runs for a certain number of hours, and is shut off at the end of the work day. The fuel usage per hour of the machine is represented by a periodic function. When does the machine first reach its full power?
A. After 4 hours B. After 7 hours C. After 2 hours D. After 14 hours