What is one seventh plus one sixths times one half

Carrie started with 12 ounces of water when she begin to walk. when she was finish walking she had 2 1/4 ounces of water left. how much did she drank

The function g(x) is defined as shown. x-1, -2 g(x) = 2x+3, -1 6-x, x23

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).