The number 3.14 is a rounded value of the mathematical quantity pi. If you replace 3.14 with pi what is the exact formula for the circumference in terms of the diameter d and in terms of the radius, r?

Explain what circumference and area have in common and how they are different.

Alex purchased a calling card for $32. He has used t minutes of access time at 15 cents per minute. To write an algebraic expression to represent how many dollars Alex has left on his card, fill in the boxes.

7r+8p - (5-rp-rp) where r=3 and p=4

If the numerator of a fraction is increased by 3, the fraction becomes 3/4. If the denominator is decreased by 7, the fraction becomes 1. Determine the original fraction.

What's the conversion factor used to convert inches to yards

There is a sales tax of $6 on an item that costs $88 before tax. The sales tax on a second item is $21. How much does the second item cost before tax?

A shirt originally priced at24.50. Theshirt goes on sale for 30% off the original price. How much money in dollars doestje shirt cost including 7%

Tara and jodys bedrooms are shaped like rectangles. Tara bedroom is 9 feet long and 8 feet wide. jodys bedroom is 7 feet long and 10 feet wide. whose bedroom has the greater area?

Find the quotient of 5 and 8

Seller Andy require a 2.5% deposit on all offers. Buyer josh wants to offer $452,000 for the property. The property was appraised at $465,000. What must the earnest money deposit be if Josh presents his current offer?