You were not driving for 12 hours.
<em><u>Explanation</u></em>
Distance to the vacation spot is 1500 miles and you estimate that you drove an average speed of 50 mph.
<u>Relationship between distance, speed and time</u> is.......

So, the <u>number of hours you drove</u> 
Given that, including rest stops it’s takes you 42 hours to get to the vacation spot.
Thus, the number of hours you were not driving 
Answer: There are 495 possible different sets of answers the could contain exactly 8 correct answers of false.
Basically, we are looking for the number of different ways of selecting 8 objects out of a set of 12 objects. Our objects are answers of false and the set is the test.
This is a combination problem. The formula would be:
12! / (8! x 4!) = 495
Answer:

or

Step-by-step explanation:
we have

This is a vertical parabola open upward (because the leading coefficient is positive)
The vertex is a minimum
Convert to vertex form
Factor the leading coefficient

Complete the square. Remember to balance the equation by adding the same constants to each side.


Rewrite as perfect squares
----> equation in vertex form
or

The vertex is the point (0.25,10.5)
20 kg remaining in bag 1.
40 kg remaining in bag 2.