Question

The expression 40x + 8 represents the amount of money Makayla earns reupholstering furniture. The expression 3x − 4 represents her upfront costs. If x represents the number of pieces of furniture she reupholsters in both expressions, what is Makayla's profit when she reupholsters 4 pieces of furniture?

$168
$21
$160
$8

Answer 1

$160

Explanation:

To calculate Makayla's profit when she reupholsters 4 pieces of furniture, we need to subtract her upfront costs from the amount of money she earns.

The amount of money she earns is represented by the expression 40x + 8, where x represents the number of pieces of furniture. Plugging in x = 4, we get:

40(4) + 8 = 160 + 8 = 168

So, Makayla earns $168 when she reupholsters 4 pieces of furniture.

The upfront costs are represented by the expression 3x - 4. Plugging in x = 4, we get:

3(4) - 4 = 12 - 4 = 8

So, Makayla's upfront costs are $8 when she reupholsters 4 pieces of furniture.

To calculate the profit, we subtract the upfront costs from the amount earned:

Profit = Amount earned - Upfront costs

Profit = $168 - $8

Profit = $160

Therefore, Makayla's profit when she reupholsters 4 pieces of furniture is $160.