Help!

Convert the rectangular equation into a polar equation.

a) r= 8cos theta

b) r= sqrt8 cos thete

c) r=8 sin theta

d) r= sqrt8 sin theta

Anyone know? will mark brainliest if correct!

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9