An area model has 2 shaded parts and 1 unshaded part. The shaded parts are labeled two-thirds. When Jake volunteers at the animal shelter, he divides Two-thirds cup of cat food equally between 2 cats. How much food does he give each cat?
Use the area model.

Two-thirds divided by 2= .

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?