an electrician charges (f) an initial fee of $20 and then $30 per hour. Which linear equation represents this if (h) represents hours
clearly, f = 20+30h
The linear equation that represents the electrician's charges can be written as:
Cost = Initial fee + Hourly rate * Number of hours
In this case, the initial fee is $20 and the hourly rate is $30. So, the equation becomes:
Cost = $20 + $30 * h
Therefore, the linear equation that represents the electrician's charges is:
Cost = 20 + 30h
To represent the relation between the charges and the number of hours, we can use the formula:
Charges = Initial fee + Hourly rate * Hours
In this case, the initial fee is $20 and the hourly rate is $30. Let's substitute these values into the formula:
Charges = $20 + $30 * Hours
Simplifying further, we get:
Charges = $20 + $30h
Therefore, the linear equation representing this situation is:
Charges = $20 + $30h