Having trouble with this problem if you could show me how to do it and not the answer that would be ! you

34 cup. a serving of vegetable soup is 23 cup. the restaurant sold 20 servings of chicken noodle soup and 18 servings of vegetable soup. how many more cups of chicken noodle soup did they sell than cups of vegetable soup?

What is the average rate of change for this function for the interval from x=2 to x=4 ?

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.