Question

over the past year, dereks monthly utility bills were as follows: $120, $125, $130, $120, $125, $135, $130, $125, $140, $15, $20, $25, $10. what is the range of his utility bills?

Explanation:

Step1: Identify maximum value

The maximum value among the bills $120, 125, 130, 120, 125, 135, 130, 125, 140$ is $140$.

Step2: Identify minimum value

The minimum value among the bills is $120$.

Step3: Calculate the range

The range is calculated by subtracting the minimum from the maximum. So, $140 - 120=20$.

Answer:

$20$