High School

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The band's manager earns a monthly rate plus $20 for each show. 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, let's break down the information given:

1. Monthly Earnings: The manager earns a monthly rate [tex]\( y \)[/tex] plus [tex]$20 for each show (or gig) booked. The expression for the earnings from the gigs is \( 20x \), where \( x \) represents the number of gigs booked.

2. Total Earnings: We need to find an inequality that shows the relationship between the number of gigs and the monthly rate leading to total earnings of at least \$[/tex]170.

3. Forming the Inequality:
- The total earnings are made up of the monthly rate [tex]\( y \)[/tex] and the earnings from gigs [tex]\( 20x \)[/tex].
- This gives us the total earnings expression: [tex]\( 20x + y \)[/tex].
- Since the earnings are at least \$170, the inequality will be: [tex]\( 20x + y \geq 170 \)[/tex].

So, the inequality that correctly relates the manager's number of gigs and monthly rate to last month's earnings is:

[tex]\[ 20x + y \geq 170 \][/tex]

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