Maria makes clothes for pets she needs 56 yd. of fabric to make 1 dog coat how much fabric does she need to make seven dog coats

Ineed to learn how to solve this problem

What percent of the circle below is shaded?

Answer asap! show all work! find the number of complex roots, the possible number of real roots and the possible rational roots of the polynomial function. then, solve for all roots. x^3 + 2x^2 + 3x + 6 = 0