Solve.Linda and Dave leave simultaneously from the same starting point biking in opposite directions. Linda bikes at 6 miles per hour and Dave bikes at 9 miles per hour. How long will it be until they are 30 miles apart from each other?
A. 
hr
B. 2 hr
C. 10 hr
D. 
hr
Answer: B
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Solve the problem.The driver of a car traveling at 54 ft/sec suddenly applies the brakes. The position of the car is 
t seconds after the driver applies the brakes. How far does the car go before coming to a stop?
A. 972 ft B. 9 ft C. 243 ft D. 486 ft
Solve the problem.The formula A = 119e0.027t models the population of a particular city, in thousands, t years after 1998. When will the population of the city reach 178 thousand?
A. 2013 B. 2016 C. 2015 D. 2014
Factor out the largest possible common factor.48x9y8 + 108x3y5 + 108x7y2
A. 12(4x9y8 + 9x3y5 + 9x7y2) B. 12x3(4x6y8 + 9y5 + 9x4y2) C. 12x3y2(4x6y6 + 9y3 + 9x4) D. x3y2(48x6y6 + 108y3 + 108x4)
Factor completely. If the polynomial cannot be factored, write "prime."12x2 + 7x - 12
A. (12x + 4)(x - 3) B. (3x - 4)(4x + 3) C. (3x + 4)(4x - 3) D. (12x + 1)(x - 12)