Well first u have to add 21.75 and 3.5 and with the power of your mind and mathematics your answer will me 25.25
We are given
Karl walked 5 1/4 miles on the first day
2 1/2 miles on the second day
so, we can find total walking distance




we are given
total donated money is

now, we can find money pay for each mile
Money pay for each mile is

now, we can plug values


So, his parent paid $12 for each mile............Answer
Answer:
105,000 foot-pounds.
Step-by-step explanation:
Work done = 3500 * 30 foot pounds