A ball is thrown straight up from the top of a 24-foot-tall building with an initial speed of 40 feet per second. The height of the ball as a function of time can be modeled by the
function h(t) = –16t

2 + 40t + 24.

a) How long will it take for the ball to hit the ground?

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

just sum

10 + 10 = 20

step-by-step explanation:

a and d

ok thats very interesting