Solve the problem.A projectile is fired from a cliff 600 feet above the water at an inclination of 45° to the horizontal, with a muzzle velocity of 350 feet per second. The height h of the projectile above the water is given by 
where x is the horizontal distance of the projectile from the base of the cliff. Find the maximum height of the projectile.
A. 3471.09 ft
B. 1914.06 ft
C. 1557.03 ft
D. 957.03 ft
Answer: C
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Find the indicated quantities for the appropriate geometric sequence.A new boat costing $27,700 depreciates 20% of its value each year. How much is the boat worth at the end of 7 years? Round to the nearest dollar.
A. $21,891 B. $7261 C. $4242 D. $5809
Which of the following is a reason for having students do writing exercises in mathematics?
a. To improve students' mathematical understanding b. To elicit students' attitudes about mathematics c. To encourage metacognitive activity d. All of the above e. None of the above
Write the fraction in lowest terms.
A. 
B. 
C. already in lowest terms
D. 
Solve the problem.The total profit (in hundreds of dollars) from selling x items is given by 
Find the marginal average profit function.
A. 
hundreds of dollars per item
B. 
hundreds of dollars per item
C. 
hundreds of dollars per item
D. 
hundreds of dollars per item