I REALLY need help with this worksheet. it is due tonight and I really don't understand it

If a • b*2 = 1.8 x 10*-7, and c•b/d = 7.2 x 10*-4, find the value of a•d*2/c*2

The rectangle shown has a perimeter of 108 cm and the given area. its length is 6 more than five times its width. write and solve a system of equations to find the dimensions of the rectangle.

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2