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Niall owes [tex]$\$187$[/tex] to his cousin. However, he doesn't have any money right now. He hopes to earn some money by painting a house. He gets paid [tex]$\[tex]$34$[/tex][/tex] for every 2 hours he paints. Which equation of a line models [tex]y[/tex], the amount of money he will have after paying back his cousin, in terms of [tex]x[/tex], the number of hours he spends painting?

A. [tex]y = 34x - 187[/tex]
B. [tex]y = 17x + 187[/tex]
C. [tex]y = 34x + 187[/tex]
D. [tex]y = 17x - 187[/tex]

Answer :

Sure, let's work through the problem step-by-step:

1. Niall owes [tex]$187 to his cousin.
2. He earns $[/tex]34 for every 2 hours of painting.

We need to express the amount of money Niall will have after paying back his cousin in terms of [tex]\( x \)[/tex], the number of hours he spends painting.

First, let's determine how much Niall earns per hour:

[tex]\[ \text{Earnings per 2 hours} = \$34 \][/tex]
[tex]\[ \text{Earnings per 1 hour} = \frac{34}{2} = \$17 \][/tex]

So, for [tex]\( x \)[/tex] hours of painting, Niall earns:

[tex]\[ 17x \][/tex]

Next, we need to consider the debt which is [tex]$\$[/tex]187$. After working [tex]\( x \)[/tex] hours and earning [tex]\( 17x \)[/tex] dollars, Niall will have to pay back the money he owes. The remaining amount of money he will have after paying off his debt is:

[tex]\[ \text{Remaining amount} = 17x - 187 \][/tex]

Therefore, the correct equation of a line that models [tex]\( y \)[/tex], the amount of money Niall will have after paying back his cousin, in terms of [tex]\( x \)[/tex], the number of hours he spends painting, is:

[tex]\[ y = 17x - 187 \][/tex]

So, the correct answer is:

D. [tex]\( y = 17x - 187 \)[/tex]

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