How do you calculate the circumference of a circle

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?

The perimeter of a rectangular rug is 24 feet. the length of the rug is 1 2/5 i s width. what is the area of the rug

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.