Jordan and Jake each work during the summer.

Jordan earns [tex]$9 per hour at her job. She also gets a $[/tex]\[tex]$10$[/tex] weekly allowance.

Jordan displayed her earnings in a table:

\begin{tabular}{llllllllll}
Hours & 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 \\
Earnings & 10 & 19 & 28 & 37 & 46 & 55 & 64 & 73 & 82
\end{tabular}

Jake earns [tex]$\$[/tex]6.50[tex]$ per hour at his job. He also gets a $[/tex]\[tex]$15$[/tex] weekly allowance.

Jake displayed his earnings in a graph.

How many hours will it take for Jordan and Jake to earn the same amount of money?



Answer :

To determine how many hours it will take for Jordan and Jake to earn the same amount of money, we need to set up equations for their earnings and solve for the number of hours where these earnings are equal.

First, we establish Jordan's earnings equation. Jordan earns \[tex]$59 per hour and gets a \$[/tex]10 weekly allowance. Therefore, her earnings (E_Jordan) as a function of hours (h) can be written as:
[tex]\[ E_{\text{Jordan}} = 59h + 10 \][/tex]

Next, we set up Jake's earnings equation. Jake earns \[tex]$650 per hour and gets a \$[/tex]15 weekly allowance. Thus, his earnings (E_Jake) as a function of hours (h) can be expressed as:
[tex]\[ E_{\text{Jake}} = 650h + 15 \][/tex]

We want to find the number of hours (h) where their earnings are equal. Therefore, we set the two equations equal to each other:
[tex]\[ 59h + 10 = 650h + 15 \][/tex]

To isolate [tex]\(h\)[/tex], we first move all terms involving [tex]\(h\)[/tex] to one side of the equation and constant terms to the other side:
[tex]\[ 59h - 650h = 15 - 10 \][/tex]

Combine like terms:
[tex]\[ -591h = 5 \][/tex]

Next, solve for [tex]\(h\)[/tex] by dividing both sides of the equation by [tex]\(-591\)[/tex]:
[tex]\[ h = \frac{5}{-591} \][/tex]

Thus, the number of hours it will take for Jordan and Jake to earn the same amount of money is:
[tex]\[ h = -\frac{5}{591} \][/tex]

This essentially means that it's not feasible within regular working hours since they cannot practically work a negative number of hours. However, mathematically this is the solution to when their earnings would meet under the given constraints.