The inner ring of a hula hoop has a radius of 18 inches. which expression can be used to find its circumference, c, in inches?

a c = 18 × π

b c = (18)2 × π

c c = 2 × 18 × π

d c = 2 × (18)2 × π

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

Find the values of y: 3y^3(y^2+ 2/3y)=0