Solve the problem.A projectile is fired from a height of 8.5 feet with an initial velocity of 158 ft/sec at an angle of 40° with the horizontal. The parametric equations for the path of the projectile are x = (158 cos 40°)t, and y = 8.5 + (158 sin 40°)t - 16t2,where x and y are in feet and t is in seconds. How long does it take the projectile to hit the ground? Round your answer to the nearest tenth of a second.
A. 6.3 seconds
B. 6.4 seconds
C. 12.9 seconds
D. 8.2 seconds
Answer: B
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Find the indicated quantity.a1, when a16 = -46 and a14 = -40
A. -1 B. -3 C. -7 D. -4
Choose the pair of rational numbers that are between the given fractions.
and 
A. 
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B. 
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C. 
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D. 
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Provide an appropriate response.A manufacturer produces two products, product A and product B. Both products require processing on Machines I and II. The number of hours needed to produce one unit is given by the following chart: 
Machine I is available for at most 1000 hours and Machine II is available for at most 2500 hours. If the profit made on product A is $20 / unit and the profit made on product B is $25 / unit. Find the production level that will maximize profit and find the Maximum profit.
What will be an ideal response?
Evaluate the function f at the indicated value.
{3x + 5, if x ? 06 - 5x, if 0 < x < 5x, if x ? 5
A. 23 B. 6 C. -24 D. 5