$.$

$$To maximize gross margin per unit, which product should you prioritize?

b

$.$

$$If sales personnel earn commissions, which product

$($

s

$)$

$$should they focus on selling, and

what's the potential sales volume?

c

$.$

$$To maximize gross profit for one

$-$

week, which product

$($

s

$)$

$$and how many units should be

produced?

d

$.$

$$Based on the strategy determined in part

$($

c

$)$

$,$

$$what would be the total gross profit for the

week?