Brianna has a 50$ online gift certificate from a book store. The cost of each book is $9. There is also a shipping charge of 5$ for her entire order. How many books can Brianna buy without spending more than her gift certificate amount?
I just went through the nines multiplication table until I got to 9 * 5 which equals 45, and then since it charges $5 for the shipping fee, $45 + $5 = $50 so 5 books would be the amount she can buy
