High School

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The band's manager earns a monthly rate, plus [tex]\$20[/tex] for each show booked. Last month, the manager earned at least [tex]\$170[/tex].

Let [tex]x[/tex] = number of gigs booked
Let [tex]y[/tex] = monthly rate

Choose the inequality that relates the manager's number of gigs and monthly rate to last month's earnings.

A. [tex]x + 20y \ < \ 170[/tex]
B. [tex]x + y \ < \ 170[/tex]
C. [tex]y + 20x \ > \ 170[/tex]
D. [tex]20x + y \geq 170[/tex]

Answer :

To solve this problem, we want to find an inequality that describes the relationship between the number of gigs the band's manager booked, the monthly rate, and the earnings for last month. Let's break it down step by step:

1. Understand the problem:
- The manager earns a fixed monthly rate, denoted by [tex]\( y \)[/tex].
- Additionally, for each gig booked, the manager earns \[tex]$20.
- Last month, the manager earned at least \$[/tex]170.

2. Define the variables:
- Let [tex]\( x \)[/tex] be the number of gigs booked.
- Let [tex]\( y \)[/tex] be the monthly rate.

3. Set up an equation for the earnings:
- The total earnings from gigs for the month would be [tex]\( 20x \)[/tex] (since it's \[tex]$20 per gig).
- Adding the monthly rate, the total earning equation becomes \( y + 20x \).

4. Translate the problem into a mathematical inequality:
- Since the manager's earnings were at least \$[/tex]170, the total must be greater than or equal to \$170.
- This gives us the inequality: [tex]\( y + 20x \geq 170 \)[/tex].

5. Identify the correct inequality from the given options:
- Compare your derived inequality [tex]\( y + 20x \geq 170 \)[/tex] with the provided options.
- The correct option is [tex]\( 20x + y \geq 170 \)[/tex].

That's the detailed reasoning behind choosing the inequality [tex]\( 20x + y \geq 170 \)[/tex]. This inequality accurately reflects the conditions given in the problem statement regarding the manager's earnings.

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