Nine times ten to the negative eleventh power over two point four times ten to the eighth power

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.

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Rob filled 5 fewer plastic boxes with football cards than basketball cards. he filled 11 boxes with basketball cards.