Find the capacity of a cylindrical cup with an inside diameter of 6cm and a height of 9cm use 3.14 for pie

The late fee for library books is $2.00 plus 15¢ each day for a book that is late. if maria’s fee for a late book was $3.20, write and solve a linear equation to find how many days late the book was.

Just tell me how to set up the equation.

Hurry which expression is equivalent to 3√x^5y?