ANSWER NEEDED ASAP For any rational number m/n and any positive real number a, a^-m/n, means 1/a^m/n

8-2x+3x2=6 and six is your answer

$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