Determine the Unit Rate. 6 golf balls for $15$

A.0.40 each

B. $9.00 each

C. $90 each

D. $2.50 each

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?