Brianna took a math test with 20 questions and she answered 16 questions correctly. in order to get an a, she needs to answer at least 90 percent of the questions correctly.

your mission, should you decide to accept it, is to tell me if brianna got an a on this math test? explain why or why not, and if she didn't get an a, how many questions would she need to answer correctly to get an a? show your work