Arliss has two pieces of carpet runner. One is 213 yards long and the other is 313 yards long. She needs 10 yards of carpet runner altogether. How much more does she need to buy? its fractions

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

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?