Ineed to copy everything in my math binder all over again any ways to do it and still have fun?

Rearrange the formula c^2 = a^2 + b^2 for b

An appliance salesman sets a goal to sell an average of 6 appliances per day for the first two weeks of his new job. the dot plot shows the number he sold each day during the first 13 days. what is the minimum number of appliances he must sell on the 14th day in order to reach his goal? a) 5 b) 6 c) 7 d) 8

What is the value of the digit 1 in the number 13?