State how many imaginary and real zeros the function has. (5 points)f(x) = x4 – 15×2 – 16  

Choose the graph which matches the function. (5 points) f(x) = 2x+1

A projectile is thrown upward so that its distance above the ground after t seconds is h = -16t2 + 608t.   After how many seconds does it reach its maximum height? (5 points)

The decay of 923 mg of an isotope described by the function A(t)= 923e-0.027t, where t is time in years. Find the amount left after 76 years. Round your answer to the nearest mg. Show all of your work for full credit. (5 points)

Use a calculator to find the approximate value of sin-1( 0.655). (5 points)

Use the change of base rule to find the logarithm to four decimal places. (5 points) log849.53

Use the product, quotient, and power rules of logarithms to rewrite the expression as a single logarithm. Assume that all variables represent positive real numbers. (5 points) 6log x + 4log y

Choose the graph of y = sin 2x. (5 points)

Use the arc length formula and the given information to find r. s = 12 cm, θ = 36°; r = ? (5 points)  

Verify the identity. cos 4u = cos22u – sin22u (7 points)