Solve the problem.A ball is thrown vertically upward with an initial velocity of 128 feet per second. The distance in feet of the ball from the ground after t seconds is 
For what intervals of time is the ball less than 240 above the ground (after it is tossed until it returns to the ground)?
A. between 0 and 2.5 seconds and between 5.5 and 8 seconds
B. between 0 and 3 seconds and between 5 and 8 seconds
C. between 0 and 3.5 seconds and between 4.5 and 8 seconds
D. between 3 and 5 seconds
Answer: B
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Solve the problem.At noon, ship A was 14 nautical miles due north of ship B. Ship A was sailing south at 14 knots (nautical miles per hour; a nautical mile is 2000 yards) and continued to do so all day. Ship B was sailing east at 
and continued to do so all day. The visibility was 5 nautical miles. Did the ships ever sight each other?
A. Yes. They were within 4 nautical miles of each other. B. No. The closest they ever got to each other was 7.3 nautical miles. C. Yes. They were within 3 nautical miles of each other. D. No. The closest they ever got to each other was 6.3 nautical miles.
List the elements in the set.The set of the days of the week
A. {Saturday, Sunday} B. {Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Sunday} C. {Tuesday, Thursday} D. {Friday, Monday, Saturday, Sunday, Thursday, Tuesday, Wednesday}
Solve.The area of a rectangular wall in a classroom is 220 square feet. Its length is 8 feet shorter than three times its width. Find the length and width of the wall of the classroom.
A. width = 10 ft; length = 18 ft B. width = 10 ft; length = 38 ft C. width = 10 ft; length = 34 ft D. width = 10 ft; length = 22 ft
Solve the problem.A land developer wants to develop 18 acres of land. Each lot in the development is to be 
of an acre. How many lots will the land developer have in the 18 acres?
A. 12 lot(s)
B. 3 lots
C. 27 lots
D. 
lot