Which expression represents the average of three test scores? x + y + z 3 (x + y + z) StartFraction x + y + z over 3 EndFraction StartFraction x y z over 3 EndFraction

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$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