When graphing a function are you supposed to connect the dots?

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

You are saving to buy a bicycle; so far you save 55.00. the bicycle costs 199.00. you earn 9.00 per hour at your job. which inequality represents the possible number of h hours you need to work to buy the bicycle?