Question

1. find the earnings for giving a haircut and a shampoo to m men and w women. justify your answer.

	haircut	shampoo
men	$15	$7

Explanation:

Step1: Define Earnings for Women

For women, haircut is $45 and shampoo is $12. So earnings per woman: $45 + $12 = $57. For \( w \) women, total: \( 57w \).

Step2: Define Earnings for Men

For men, haircut is $15 and shampoo is $7. So earnings per man: $15 + $7 = $22. For \( m \) men, total: \( 22m \).

Step3: Total Earnings

Add women's and men's total earnings: \( 57w + 22m \).

Answer:

The total earnings for giving a haircut and a shampoo to \( m \) men and \( w \) women is \( \boldsymbol{22m + 57w} \) dollars (justification: calculated per - person earnings and multiplied by number of people, then summed).