QUESTION $1$You are late paying your cable bill again.$$ It was due $7$ days ago and you have been charged $$30.$ Your bill was $$111.$ What is the period rate? Convert to a percent and round to $2$ decimal places.

QUESTION $2$You are late paying your cable bill again.$$ It was due $10$ days ago and you have been charged $$38.$ Your bill was $$132.$ What is the Effective Annual Rate? Convert to a percent and round to $2$ decimal places

QUESTION $3$Your roommate let you borrow $$230$ to buy the PS$52$ months ago.$$ You just paid him back today and gave him $$22$ extra for interest.$$ What is the effective annual rate?$$ Convert to a percent, round to $2$ decimal places.

QUESTION $4$Your roommate let you borrow $$176$ to buy the PS$52$ months ago.$$ You just paid him back today and gave him $$20$ extra for interest.$$ What is the period rate?$$ Convert to a percent, round to $2$ decimal place.

QUESTION $5$Your roommate let you borrow $$304$ to buy the PS$55$ months ago.$$ You just paid him back today and gave him $$31$ extra for interest.$$ What is the annual percentage rate $($APR$)?$ Convert to a percent, round to $2$ decimal places.

QUESTION $6$You are late paying your cable bill again.$$ It was due $10$ days ago and you have been charged $$34.$ Your bill was $$172.$ What is the annual percentage rate $($APR$)?$ Convert to a percent and round to $2$ decimal places.

QUESTION $7$You just got the Amazon credit card.$$ The annual rate is $18\mathrm{.}8\%$ and interest compounds daily.$$ What is the effective annual rate $($EAR$)?$ Convert to a percent round to $2$ decimal places.

QUESTION $8$You know that average returns on the stock market have ranged between about $8\%$ and $12\%$ per year in recent decades. So when someone on reddit claims that there is an investment that can give you a guaranteed average return of $10\%$ per month, you did not believe them.$$ What would be the annual percentage rate on the investment that the redditor describes?$$ Answer as a percent