A ball is thrown in the air from a ledge. Its height in feet is represented by f(x) = -16(x2 - 5x-6), where x is the number of seconds since the ball has
been thrown. The height of the ball is O feet when it hits the ground.
How many seconds does it take the ball to reach the ground?
A. 1
B. 5
C. 16
D. 6

What is the solution set of the quadratic inequality x^2-5< or equal to 0

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.

Which of the following are arithmetic sequences? check all that apply. a. 0.3, 0.6, 0.9, 1.2, 1.5, b. 2, 3, 6, 11, 18, c. 150, 147, 144, 142, d. 2, 4, 9, 16, 25,