If a number is first doubled then decreased by six and the result is eight, what is the number?

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

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x