High School

Noah earns [tex]\$ 145[/tex] each week at his job. He is paid [tex]\$ 15.60[/tex] per hour. Which equation shows [tex]x[/tex], the number of hours Noah works each week?

A. [tex]145 - x = 15.60[/tex]

B. [tex]15.60 + x = 145[/tex]

C. [tex]145x = 15.60[/tex]

D. [tex]15.60x = 145[/tex]

Answer :

Sure, let's work through the problem step-by-step to find the correct equation.

Noah earns a total of [tex]$145 each week. His hourly pay rate is $[/tex]15.60. We need to determine how many hours, [tex]\( x \)[/tex], Noah works each week.

To find this, we use the relationship that his total earnings for the week ([tex]$145) are equal to his hourly rate ($[/tex]15.60) multiplied by the number of hours he works:

1. Identify the components:
- Total earnings in a week: [tex]$145
- Hourly rate: $[/tex]15.60
- Number of hours worked: [tex]\( x \)[/tex]

2. Set up the equation:
Since his total earnings are given by multiplying the hourly rate by the number of hours worked, we can set up the equation:
[tex]\[
15.60 \times x = 145
\][/tex]

3. Solve for [tex]\( x \)[/tex]:
To find [tex]\( x \)[/tex], you would divide both sides of the equation by 15.60:
[tex]\[
x = \frac{145}{15.60}
\][/tex]

4. Conclusion:
This means the number of hours Noah works each week can be found using the equation [tex]\( 15.60x = 145 \)[/tex]. Therefore, the correct choice from the options provided is:
[tex]\[
15.60x = 145
\][/tex]

This equation accurately represents the relationship between the number of hours Noah works and his weekly earnings.