Joyce Murphy runs a courier service in downtown Seattle. She charges clients $0.60 per mile driven. Joyce has determined that if she drives 2,250 miles in a month, her total operating cost is $625. If she drives 3,350 miles in a month, her total operating cost is $845.

Explanation:

The computation of the fixed cost and the variable cost per hour by using high low method is shown below:

Variable cost per mile = (High Operating cost - low operating cost) ÷ (High miles - low miles)

= ($845 - $625) ÷ (3,350 miles - 2,250 miles)

= $220 ÷ 1,100 miles

= $0.2 per miles

Now the fixed cost equal to

= High operating cost - (High miles × Variable cost per miles)

= $845 - (3,350 miles × $0.2 per miles)

= $845 - $670

= $175

And, the contribution margin income statement is presented below:

Sales (1,400 × $0.6)                                         $840

Less: Variable cost (1,400 × $0.2)                ($280)

Contribution margin                                        $560

Less: Fixed cost                                               ($175)

Net  operating income                                    $385

answer; ///i believe that the correct answer is (a) it is the means by which a person earns money;

muslims control the north africa during the period of 1500 up

to 1800. they made a barrier to prevent further european exploration from

entering the africa from the north. however, the dutch ware still able to move

toward the interior with having south africa as one of the routes leading to

the east for trading with asia.