Samantha is trying to decide which cell phone plan to
 buy. Crock Cell phone company offers a 25 dollar per
 month plus 4 dollars for each gig of data or 45 dollars for
 unlimited data up to 10 gigs before limiting the speed per
 month. Which plan is the best deal? Make equations for
 each choice than a table and graph. Explain which one is
 the better buy and why?