And i will make brainliest and will than and rate and give points if someone me

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it. how many multiple-choice questions are on the test?

To decrease an amount by 16% what single multiplier would you use

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?