The mean temperature for the first 7 days in January was 7 °C.
The temperature on the 8th day was 3 °C.
What is the mean temperature for the first 8 days in January?

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.

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)