Acar can travel 300 miles using 15 gallons of gas. what is the unit rate?

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.