there are 30 cities in a country. Each city has 4 highways coming out of it. How many highways connecting 2 cities are there in this country?

How many grams the dog will eat in 3 days?

If a is a nonzero real number then the reciprocal of a is

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.