Simplify by combining like terms.3x + 3y - 5x + 6y
A. 9x - 2y
B. 3x - 5x + 3y + 6y
C. 7xy
D. -2x + 9y
Answer: D
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Find the least common multiple of the numbers in the group.48, 162, 3
A. 324 B. 1296 C. 432 D. 648
Find the area of the specified region.Inside the limacon r = 9 + 6 sin ?
A. 99? B. 198? C. 198? - 108 D. 99? + 108
Solve the problem.A ball is thrown downward from a window in a tall building. Its position at time t in seconds is 
where s is in feet. How long (to the nearest tenth) will it take the ball to fall 168 feet?
A. 2.4 sec B. 5.8 sec C. 2.2 sec D. 3.2 sec
Use the Urban Prices Index Table to answer the question. The table shows what $100 worth of an item costs today. 
*All figures are expressed as a percent of the base of 100 from two decades ago.Urban area: ChicagoWhat does $100 of Food and beverages cost today?
A. $219.20 B. $186.30 C. $202.30 D. $237.80