Zipcar $($www$.$zipcar.com$)$ is a car$-$sharing club founded in Cambridge, Massachusetts, in $1999.$ The club members pay an annual fee and then have the opportunity to rent from a pool of available cars for a fixed hourly or daily rate. Zipcar is located largely in select metropolitan areas such as Boston, San Francisco, and Washington, D$.$C$.$ Members, called $$Zipsters$,$ make reservations for a car on the Zipcar website and then use an access card to open the vehicle. The vehicle has a $$home base$$ parking spot where the driver picks up and returns the vehicle. The club$$which operates in more than $500$ cities and towns, at more than $600$ college campuses, and at $50$ airports$$has grown to more than $1$ million members since its initial public offering in April $2011.$

The Zipcar website provides details on membership and mentions a $$7\mathrm{.}00$ monthly membership fee. A car can be rented for an hourly or daily rate. While the actual rate can vary, a car can be rented for about $$9\mathrm{.}00$ per hour, which includes $20$ free miles, or for a $$75$ daily rate, which includes $189$ free miles per day, and a charge of $$0\mathrm{.}50$ per mile for each mile over $189.$

Required:

$1.$ Assume you will take a two$-$day trip to visit some friends over the weekend and you will drive $418$ miles. What is the total cost of this trip?

$2.$ You are trying to estimate your monthly spending on your Zipcar membership. You plan to make four weekly trips to run errands like grocery shopping, going to the pharmacy, etc. Each trip will take about two hours and be about $19$ miles. You will also take a trip over a three$-$day weekend to visit your family and expect the trip will cover a total of $468$ miles. How much do you expect your Zipcar costs to be for the coming month?