What is the equation of 1 exterior angle of a regular polygon

You can find the constant of proportionality by finding the ratio of

Agraphic designer created a logo on eight and a half by 11 inch paper. in order to be placed on a business card, the logo needs to be one and 7/10 inches by 2 and 1/5 in. what is the scale factor of the dilation

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14