last year manfred received 26 paychecks . each of his first 6 paychecks was $ 750 ; each of his remaining paychecks was $ 40 more than each of his first 6 paychecks . to the nearest dollar , what was the average ( arithmetic mean ) amount of his pay checks for the year ?
"= ( 750 * 6 + 790 * 20 ) / 26 = 781 answer is a . posted from my mobile device"
divide(add(multiply(add(750, 40), 40), multiply(6, 750)), 26)