Jina is raising money for a charity. She makes either 18 telephone calls per day or 10 home visits per day. Jina wants to contact at least 100 people next week.
The situation can be represented by the following system of inequalities, where x= number of days making telephone calls and y=number of days makirſg home Visits, Which of the following is a true statement?

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.

Where is the expression you want us to evaluate?