What formula is expressed using the equation c^2 = a^2 b^2?

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

True or false look at the picture pls : /

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.