A school cafeteria offers two choices for lunch a lunch combo or a slice of pizza. The tape diagram below models 25 lunches sold during one lunch period.

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Which of these tables represents a non-linear function?

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry