Write an equation of line in point slope form that passes through (-4,5) and is perpendicular to y=4x-1

Which of those sequences is a geometric sequence

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?

Find the domain of the following expression: 1/(√x)-2