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1. A projectile is launched from a platform 26 feet high with an initial velocity of 56 feet per second, The height h of the projectile at t seconds after launch is given by h = -16t2 + 56t + 26 feet.

(a) How many seconds after launch does the projectile attain maximum height? Show work.

(b) What is the maximum height? Show work.

2. Solve x+11/x+4 + 56/x^2-16 = 0 Show work

3.  Suppose that cos θ = -12/13 and that θ is a Quadrant III angle.

(a) Find the exact value of sin θ . Show work.

(b) Find the exact value of sin(2 θ ). Show work.

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