Hannah's favorite cereal comes in 2 sizes: 775 grams for $6.45 and
400 grams for $3.15.
Which is the better buy? Why?

If a is a nonzero real number then the reciprocal of a is

Bo is buying a board game that usually costs bb dollars. the game is on sale, and the price has been reduced by 18\%18%. what could you find the answer?

Find the solution on the interval [0, 2pi)