2wholes and 1 7ths of 42 (in lowest terms)

Hello, i need compare km^2 and km. what's difference in this?

Answer asap! urgent! will give brainliest!

Acollege is selling tickets for a winter fund-raiser. one day, krissa sold 14 adult tickets and 8 student tickets for a total of $376. the next day, she sold 7 adult tickets and 11 student tickets for a total of $272. krissa wanted to find the price of one adult ticket, a, and the price of one student ticket, s. she wrote and solved the following system of equations.