Solve the problem.A projectile is thrown upward so that its distance above the ground after t seconds is 
. After how many seconds does it reach its maximum height?
A. 24 s
B. 16 s
C. 32 s
D. 8 s
Answer: B
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The question(s) that follow refer to the problem of finding the minimum spanning tree for the weighted network shown below.
Using Kruskal's algorithm, which edge should we choose third?
A. BD B. EF C. DF D. BF E. none of these
Provide an appropriate response.Graph the set x ? 2 on a number line.
A. 
B. 
C. 
D. 
Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.
A. y = -6.2x + 140.4 B. y = 6.8x - 150.7 C. y = 6.2x - 140.4 D. y = -6.8x + 150.7
Solve the problem.In the metropolitan area, car dealers have 2874 foreign sports cars for sale and 1161 domestic sports cars for sale. How many sports cars are for sale?
A. 1713 cars B. 4035 cars C. 3537 cars D. 2632 cars