Solve the problem.The distance an object is from the ground after being tossed from a hot air balloon 820 feet in the air is a function of time: 
where y is height and t is the amount of time the object has been in the air. Predict the height of the object after 5.5 seconds.
A. 301.08 feet
B. 0 feet
C. 763.35 feet
D. 364.88 feet
Answer: D
Mathematics
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Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.2 cos 2x = 
A. No solution
B. 
, 
, 
, 
C. 0, 
, ?, 
D. 
, 
, 
, 
Mathematics
Determine whether the given ordered pair satisfies the inequality.x ? y + 2:(4, 1)
A. Yes B. No
Mathematics
Evaluate the expression. 
A. 
B. 3024
C. 126
D. 15120
Mathematics
Find values of x and y such that both fx(x,y) = 0 and fy(x,y) = 0.f(x,y) = x2 + xy + y2 + 2x + 3y
A. x = 
, y = 
B. x = 
, y = 
C. x = - 
, y = - 
D. x = - 
, y = - 
Mathematics