his year, Cornell’s class took two more than three times as many field trips as last year’s class. This year, Cornell’s class took a total of 8 trips. How many field trips did his class take last year?

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.