Solve (x +1< 4) n(-8 > -7).
{x11 {xx< 3 or x> 1}
{all real numbers)

Use a calculator basically

$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