Ihave no idea how to determine the domain an range once i work these out. can someone explain how to find the domain and range in general?

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15