How do you work out the math problem ( 1+19÷12 ) t-1

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?

The length of triangle base is 26. a line, which is parallel to the base divides the triangle into two equal area parts. find the length of the segment between triangle legs.

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?