Can someone help me with this?

Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height?

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

Construct a box plot to represent the ages of the actors in a play. step 1: arrange the numbers in order from lowest (on the left) to highest. 24 18 30 26 24 33 32 44 25 28