The circumference of a circle is 90 in. What is the area, in square inches? Express your answer in terms of T.

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)