Envelopes are sold in packages of 40. There are 4 large envelopes in each package. How many la envelopes will you get if you buy 160 envelopes? Explain.
You need to buy packages of envelopes, so you will get large envelopes.

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

This is about circle theorems. someone asap : (

Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.