Pls help with both 19 and 20 I’ll mark brainliest, show how you set up the problems

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

Use the data on the dot plot to answer the question.how many people read for more than three hours last week? i'm on a unit test review

Combine the information in the problem and the chart using the average balance method to solve the problem.