Neglecting air resistance and the weight of the propellant, determine the work done in propelling a eight-ton satellite to a height of 100 miles above earth. Assume that Earth has a radius of 4,000 miles.
?
A. 
ft-lb
B. 
ft-lb
C. ?
ft-lb
D. ?
ft-lb
E. ?
ft-lb
Answer: D
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Solve.A projection of the annual growth rate (in %) of the number of users of a certain electronic compass is 
, where t is the number of years after 2000. Sketch the graph of this function from 2000 to 2010. p% growth rate
t years after 2000
A. p% growth rate
t years after 2000
B. p% growth rate
t years after 2000
C. p% growth rate
t years after 2000
D. p% growth rate
t years after 2000
Match the given equation with one of the graphs.(y - 2)2 = -4(x + 3)
A. 
B. 
C. 
D. 
If a tree casts a shadow of 5 ft 7 in. at the same time that a 5-ft 7-in. person casts a shadow of 1 ft 6 in., find the height of the tree (to the nearest inch). ? __________ ft __________ in
What will be an ideal response?
A Ferris wheel is built such that the height h (in feet) above the ground of a seat on the wheel at time t (in seconds) can be modeled by 
. The wheel makes one revolution every 36 seconds and the ride begins when t = 0. During the first 36 seconds of the ride, when will a person, who starts at the bottom of the Ferris wheel, be 67 feet above the ground?
?
A. 9 seconds and 22 seconds B. 9 seconds and 27 seconds C. 10 seconds and 22 seconds D. 9 seconds and 17 seconds E. 10 seconds and 17 seconds