Answer:
$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.