The Math Department ordered packages of colored pencils in bulk from Amazon. The total cost for the supplies can be found using the function c = 12.95x + 7.95. What is the domain and range if there were at least 20 and no more than 30 purchased?​

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

This is so hard and it’s for a test

To finance her community college education, sarah takes out a loan for $2900. after a year sarah decides to pay off the interest, which is 4% of $2900. how much will she pay