An object is thrown upward from the top of an 80ft tower.
the height h of the object after t seconds is represented by the quadratic equation h= -16t^2 + 64t + 80.

after how many seconds will the object hit the ground?

a. 29 seconds
b. 6.4 seconds
c. 5.0 seconds
d. 8.0 seconds

An is a number that is written without a component. it is a number that is either or . an exponent is a or a number that another number is being to. the number that is being raised to a is called the . the or power tells you how many times to the base by . if an exponent is fractional then ask yourself the question: what when multiplied by itself a certain number of times will equal the number?