Kristen completed 42 km. We will imagine that she ran all 6 hours. => 9 * 6 =54 km which is more than she actually completed. So we will find a 9 Multiple less than 42 km and that will be 36 km. (9 * 4 = 36 km completed by running) and the rest until 42 were completed by walking (3 * 2 = 6; 6 + 36 =42).
Solution:
As we given that 
then using this conversion factor we can write 
and further it can be written as
Hence the required conversion factor is 2.54 cm/1 inch as we can see from the above calculation.
Y2-y1/x2-x1
1-4/2-3
Slope is: -3/-1 or 3
Answer:
$514.50
Step-by-step explanation:
7+4+2+8=21
$12.25x21=$514.50
