You have $1,500 to spend over a five month semester to cover your living expenses. In the first month, you spend $150 at restaur
ants, $50 on personal care items, $40 on a pair of jeans, $60 on your cell phone bill, and you fly home for $200 to visit your friends. How much can you spend on average in each of the next four months to stay within your spending plan?
1st month you spent $300. And the flight back is $200. 300+200=500. 1500-500=1000. Yoy have 1000 dollars to spend in 4 months. 1000/4=250, so each month you can spend $250.
I like to solve these by graphing, so if you graph both of these functions (as shown in the picture below), you look for the intersection between the two graphs, which in this case is (-2,6).
