A football is kicked from ground level with an initial velocity of 72 feet per second. The height above the ground is modeled by the function h(t)=-16t^2+72t, where t is the time in seconds since the football was kicked. How many seconds will it take the football to reach a height of 80 feet as it travels upward?

$18 was the price of the t-shirt

step-by-step explanation:

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

answer: x=3 and y=4

step-by-step explanation:

step-by-step explanation:

its 512 because parenthesis and to the 2nd power is 512 so it will be 512