Elaine is counting votes from a school election. There were 3 candidates running for president, and students either voted for 1 of those 3 or the didn't vote at all. If there are 860 students in the school and one-fourth of them voted for Serina, two-fifths of them voted for Sandra, and three tenths voted for Michelle, how many students did not vote?

Matt and brian were solving a system of equations. they both noticed that the two lines had the same slope. brian said that because each line in the system had the same slope, the two lines had to be parallel, which meant the solution to the system was "no solution" matt disagreed, and said they should also look at the y-intercepts before determining how many solutions there were. who is correct?

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

Jenny earned a 77 on her most recent test jenny score is no less then 5 points greater then 4/5 of terrance’s score if t represents terrance score which inequality represents the situation