To find the proportion that represents how long an employee must work to make $80 when they are paid $20 per hour, we can set up the following equation based on the relationship between wages, hours worked, and pay:
The amount earned ($80) is equal to the hourly wage ($20) multiplied by the number of hours worked (x).
So, we have:
\[ 20 \text{ (dollars/hour)} \cdot x \text{ (hours)} = 80 \text{ (dollars)} \]
In fractional notation, this can be written as:
\[ \frac{80}{1} = \frac{20}{x} \]
This shows the direct relationship between total earnings and hours worked, using the hourly wage.
Thus, the correct response from your options is:
80 over 1 is equal to 20 over x.