According to the rule of 72, in about how many years will $20 be worth $10 if the rate of inflation is 6%?

a. 48 years
b. 6 years
c. 24 years
d. 12 years

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.

Find the unit rate. enter your answer as a mixed number. a fertilizer covers 2/3 square foot in 1/2 hour.

At a little-known vacation spot, taxi fares are a bargain. a 49-mile taxi ride takes 63 minutes and costs $44.10. you want to find the cost of a 37-minute taxi ride. what unit price do you need?