**5 points** Please help solve if you can

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?

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4

What is the solution for 6 - 7/8? explain the steps.