To determine the call rate of a phone company, you need to understand the relationship between the price you pay and the amount of time you spend on the phone. Specifically, the call rate is typically expressed as the cost per minute of a phone call. Therefore, you are looking for a statement that describes how the price in dollars changes with the time in minutes.
Here are the given choices:
1. The quantity of price measured in dollars depends on the quantity of time measured in minutes.
2. The quantity of speed measured in calls per minute depends on the quantity of time measured in minutes.
3. The quantity of time measured in minutes depends on the quantity of speed measured in calls per minute.
4. The quantity of time measured in minutes depends on the quantity of price measured in dollars.
Analyzing these options:
- Choice 2 and 3 talk about speed and calls per minute, which are not relevant for defining the call rate.
- Choice 4 suggests that time depends on the price, which is incorrect because the price should depend on the duration of the call, not the other way around.
Therefore, the best definition is:
- The quantity of price measured in dollars depends on the quantity of time measured in minutes.
Thus, the correct choice is:
1. The quantity of price measured in dollars depends on the quantity of time measured in minutes.
