Simone knows that 8 groups of 6 make 48. how can she find 48/6

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.

Find the roots of the equation below. x^2 - 6 + 9 = 0

Which diagram shows lines that must be parallel lines cut by transversal?