Answer:
1 hour
Step-by-step explanation:
Let's assume that Patrick is travelling on a straight line throughout the whole path in order to minimize the distance.
The number of miles that he can travel on a full tank is:

The distance travelled by Patrick in one hour (from 2p.m. to 3p.m.) is:

If he is travelling at 10 miles per hour, and he could travel for a total of 20 miles, then the time remaining before the tank runs out of gasoline is:

If he continues at this rate, the gas will last for 1 more hour.
Answer:
c
Step-by-step explanation:
both of the familys have higher cost and have to stay longer
Answer:

Step-by-step explanation:
Given,
The rate of change in the temperature T of coffee at time t is proportional to the difference between the temperature M of the air at time t and the temperature of the coffee at time t,
i.e.


Where, k is the constant of proportionality.