Karina bought a camera with a regular price of $99. it was on sale at a 20% discount. there was a 7% tax on the sale price. how much did karina spend to buy the camera?

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.