Solve the problem using a graphing calculator.A Ferris wheel with a radius of 38 feet turns clockwise at the rate of one revolution every 
The lowest point of the Ferris wheel is 18 feet above ground level at the point (0, 18) on a rectangular coordinate system. Find parametric equations for the position of a person on the Ferris wheel as a function of time (in seconds) if the Ferris wheel starts (t = 0) with the person at the point 
A. x = 38 cos (20t)° ft, y = 38 sin (20t)° + 56 ft
B. x = 38 cos (20t)° ft, y = 38 sin (20t)° + 18 ft
C. x = 38 cos (18t)° ft, y = 38 sin (18t)° + 18 ft
D. x = 38 sin (20t)° ft, y = 38 cos (20t)° + 56 ft
Answer: A
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Solve.Determine the area of a circular enclosure and a square enclosure made with 1116 yards of fence. Use 
A. Circular: 99,110 yd2; square: 311,364 yd2 B. Circular: 67,562 yd2; square: 77,841 yd2 C. Circular: 67,562 yd2; square: 311,364 yd2 D. Circular: 99,110 yd2; square: 77,841 yd2
Write as a percent.0.956
A. 956% B. 0.956% C. 0.0956% D. 95.6%
Solve the problem.A certain company has found that its expenditure rate per day (in hundreds of dollars) on a certain type of job is given by 
where x is the number of days since the start of the job. Find the expenditure if the job takes 6 days.
A. $16 B. $6000 C. $1600 D. $60
Graph the circle.x2 + y2 - 8x - 12y + 43 = 0
A. 
B. 
C. 
D. 