Solve the problem.A projectile is fired from a cliff 300 feet above the water at an inclination of 45° to the horizontal, with a muzzle velocity of 190 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. 282.03 ft
B. 564.06 ft
C. 1146.09 ft
D. 582.03 ft
Answer: D
Mathematics
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Find the exact value by using a half-angle identity.sin 22.5°
A. - 
B. - 
C. 
D. 
Mathematics
Solve the problem.A weight attached to a spring is pulled down 3 inches below the equilibrium position. Assuming that the frequency of the system is 
cycles per second, determine a trigonometric model that gives the position of the weight at time t seconds.
A. y = 3? cos 8t
B. y = -3 cos 16t
C. y = -3 cos 
t
D. y = 3 cos 16t
Mathematics
Use the leading coefficient test to determine whether y?? or y?-? as
y = 7x6 - x5 + 4x2 - 1
A. -? B. ?
Mathematics
Write the inequality in interval notation.x > -2
A. (-?, -2) B. (-?, -2] C. (-2, ?) D. [-2, ?)
Mathematics