Show your work: Please click the "Show Work" button and type your step-by-step work, including the equations, plugging the data, calculations, results and conclusions. If no work is shown, you will receive zero credit for this question. Mabel and her design team created the system below: (a) The overall reliability of the system =% (enter your response as a percentage rounded to two decimal places). (b) If $2,100 must be spent to fix a failed system, what is the expected failure cost of the system? $ (round your response to the nearest dollar). (c) If the team proposes to add a backup component with 85% reliability to R1, how much should they pay for the backup at most? $ (round your response to the nearest dollar)