Compute the global mininum of the function f (x, y, z) = x^2 +xy + xz+ yz+ y^2 + z^2 + x + y+ z

Two because two of one thing is two.

Multiple choice or not?

$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