The price of a cup of coffee was $2.65 yesterday. Today, the price fell to $2.40 . Find the percentage decrease. Round your answer to the nearest tenth of a percent.

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

9/10 divide by -3/15 as a mixed number

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.