Gene is mailing a package of books to his brother. The post office charges by the weight of the package: a flat fee of $5.90 plus $0.70 per pound. Gene also wants to ensure the package, which costs $3.50. Gene has $13 to spend on shipping.
a) Write an inequality describing the number of pounds Gene's package can weigh.
Solve it and graph the solution set.
b) can you list out all the possible solutions? Why or why not?