The depth of water 
at my favorite surfing spot varies from 5 to 15 feet, depending on the time. Last Sunday high tide occurred at 5:00 A.M. and the next high tide occurred at 6:30 P.M. Use a sine function to model to the depth of water as a function of time t in hours since midnight in Sunday morning.
What will be an ideal response?
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Solve the problem.The purchase price of a sports car that Trina plans to buy is $28,500. In order to qualify for the loan on the sports car, Trina must make a down payment of 10% of the purchase price. Find the amount financed.
A. $25,650.00 B. $24,225.00 C. $2850.00 D. $27,075.00
Provide an appropriate response.If you were considering purchasing an average-priced home in a new community with home values ranging from $100,000 - $1,000,000, which of the following would give the most realistic picture of how much that home is likely to cost?
A. grouped data B. mean C. class interval D. median and mode
Solve the problem.A rotating beacon is located a distance d from a long wall. The distance d is given by 
, where t is the time measured in seconds since the beacon started rotating. Solve the equation for t.
A. t = 2? arctan 
B. t = 
tan 
C. t = 
arctan 
D. t = 2? tan 
Solve the following system by any appropriate method. If there is no real number solution, so state.x2 + y2 = 9y = x - 3
A. (3, 0), (0, -3) B. (-3, 0), (3, 0), (0, -3), (0, 3) C. (-3, 0), (0, 3) D. no real solution