The recipe for lemonade calls for 2 cups of lemon juice and 5 cups of water. If you follow the recipe, how many cups of lemon juice will be needed to make 70 cups of lemonade?

Which statements about the two fossil images are correct? 1. cave bears are ancestors of plateosaurus. 2. plateosaurus were present on earth before ostracoderms. 3. ostracoderms were the first to die. 4. plateosaurus died after the ostracoderms. 5. cave bears are the oldest fossils.

Jerrold has to buy 12 copies of a textbook which costs $36.25 per copy. how much must he spend for them?

What is 7/81 as a percentage? round your answer to the nearest tenth of a percent.