It costs $100 to rent the bowling alley, plus $4 per person. The cost for any number (n) of people can be found using the expression 100 + 4n. The cost for 10 people equals $ ___. (Input whole number only.)
Well we start by turning that "n" into 10 in 100 + 4n, and that 4n means we gotta multiply, so we multiply 4 X 10 to get 40. now we just add 100 + 40 to get our answer, which is $140