What is the property of 4× +12= 20

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?

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

Will mark name all segments skew to bc