I don't understand this can someone maybe explain it to me I would appreciate it .

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

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?