Johan found that on a ruler, 2 feet is equal to 610 millimeters. The diagonal of his television measures 3.5 feet. Which proportion could Johan use to find x, the length of the diagonal of the television screen in millimeters?

$250 deductible means jane must pay the first $250 of her bill. so the insurance company paid = (80% of bill) - deductible = (0.8 x $2550) - $250 = $2040 - $250 = $1790 and jane's cost is = (bill) - (insurance payment) = $2550 - $1790 = $760