Solve the equation. Round to the nearest tenth, if necessary.If an object is propelled upward from a height of 80 feet at an initial velocity of 80 feet per second, then its height after t seconds is given by the equation h = -16t2 + 80t + 80, where h is in feet. After how many seconds will the object reach a height of 180 feet?
A. 5 sec
B. 1.25 sec
C. 2.5 sec
D. 10 sec
Answer: C
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Solve the problem.Over the past two weeks, Jane earned $260 and $282 respectively, at her part time job. What must she earn in the third week to bring her three-week average earnings to $250 per week?
A. $250 B. $271.00 C. $396.00 D. $208.00
Find the right part of the identity.
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__________
?
A. 
B. ?
C. ?
D. ?
E. ?
Write an equation for a function whose graph fits the given description.The graph of f(x) = x2 is shifted 2 units to the left. This graph is then vertically stretched by a factor of 6 and reflected across the x-axis. Finally, the graph is shifted 7 units downward.
A. y = -6(x - 2)2 + 7 B. y = -6(x + 7)2 - 2 C. y = -6(x - 2)2 - 7 D. y = -6(x + 2)2 - 7
Which set of parametric equations represents the following line or conic?Use x = h+ a sec q and y = k + b tan q.
Hyperbola: vertices ( 2, -4 ), ( 10, -4 )
foci ( -2, -4 ) , ( 14, -4 )
a. 
b. 
c. 
d. 
e. 