500% of what number is 3,450

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)

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