Which equation can be solved using the expression startfraction negative 3 plus-or-minus startroot (3) squared + 4 (10) (2) endroot over 2 (10) endfraction for x?

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