Solve.The velocity v of a falling object (ignoring air resistance) is directly proportional to the time t of the fall. If, after 4 seconds, the velocity is 128 feet per second, what will its velocity be after 9 seconds?
A. 
foot/second
B. 288 feet/second
C. 133 feet/second
D. 285 feet/second
Answer: B
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Sugar costs $1.55 per pound, and lemons cost $0.47 each. You sell lemonade for $1.35 per glass. Write S for the pounds of sugar used, L for the number of lemons used, G for the number of glasses of lemonade you sell, and P for the profit, in dollars, you make. Express using a formula your profit in terms of pounds of sugar used, number of lemons used, and number of glasses of lemonade sold. ?
A. 
B. ?
C. ?
D. ?
Solve.John and Tony start from GraysLake at the same time and head for a town 10 miles away. John walks twice as fast as Tony and arrives 3 hours before Tony. Find how fast each walks.
A. Tony's speed = 
mph and John's = 
mph.
B. Tony's speed = 3 mph and John's = 6 mph.
C. Tony's speed = 
mph and John's = 
mph.
D. Cannot be determined with information given
Factor the polynomial completely.(p + q)3 - (p - q)3
A. 2p(3p2 + q2 + 2pq) B. 2q (3p2 + q2) C. 2p (p2 + 3q2) D. 2q(p2 + 3q2 + 2pq)
Solve the equation.- 
x = -7
A. -15 B. 1 C. 49 D. -14