Pls help me :( I’ll give u brainliest

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?

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.

Quick graph the line for y+2=32(x+4) on the coordinate plane. does anyone know the cordinates will mark brainliest.