2x - 4 + 3x simplify the expression

What is the quotient of -3/8and-1/3?

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. what is the probability that, in any seven-day week, the computer will crash less than 5 times? round your answer to four decimal places