Sam is a waiter at a local restaurant where he earns wages of [tex]\$6[/tex] per hour. Sam figures that he also earns about [tex]\$2.50[/tex] in tips for each person he serves. Sam works 4 hours on a particular day.

If [tex]n[/tex] represents the number of people Sam serves that day, which of the following functions could Sam use to figure [tex]E[/tex], his total earnings for the day?

A. [tex]E(n) = 4n + 10[/tex]

B. [tex]E(n) = 2.5n + 24[/tex]

C. [tex]E(n) = 2.5n[/tex]



Answer :

To determine Sam's total earnings [tex]\(E\)[/tex] for the day, let's break down his earnings into two parts: his wages and his tips.

1. Calculating his wages:
- Sam earns \[tex]$6 per hour. - He works for 4 hours on this particular day. To find his total wages for the day, we multiply his hourly wage by the number of hours worked: \[ \text{Total wages} = \$[/tex]6 \, \text{per hour} \times 4 \, \text{hours} = \[tex]$24 \] 2. Calculating his tips: - Sam earns approximately \$[/tex]2.50 in tips for each person he serves.
- Let [tex]\(n\)[/tex] represent the number of people Sam serves that day.

Therefore, the total amount he earns in tips is:
[tex]\[ \text{Total tips} = \$2.50 \times n \][/tex]

3. Formulating the total earnings:
- To find Sam's total earnings for the day [tex]\(E\)[/tex], we sum his wages and his tips.

Therefore, the function [tex]\(E\)[/tex] which represents his total earnings for the day can be expressed as:
[tex]\[ E(n) = \text{Total wages} + \text{Total tips} = 24 + 2.5n \][/tex]

4. Choosing the correct option:
From the given options, the correct function that represents Sam's total earnings for the day is:
[tex]\[ \boxed{E(n) = 2.5n + 24} \][/tex]

Thus, the appropriate choice is Option B: [tex]\(E(n) = 2.5n + 24\)[/tex].