Can someone help me?

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?

How do you write y-10=2 (x-8) in standard form

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?