What is the area of a Rectangle with a base of 12 mm and a height of 1.4 mm

What is the quadric regression equation that fits these data

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39