To calculate your total wages using the given equation \( y = 0.75x + 30 \), where \( x \) is the number of phones assembled:
Given:
- \( x = 100 \) (the number of phones you assembled)
- The formula for wages: \( y = 0.75(100) + 30 \)
Now, substitute \( x \) into the equation:
\[ y = 0.75 \times 100 + 30 \] \[ y = 75 + 30 \] \[ y = 105 \]
Thus, your wages for assembling 100 phones in one day would be $105.00.