The graph shows the prices, in dollars ,of different numbers of pies at erik’s store . the table shows the prices , in dollars, of different numbers of doughnuts at the same store

How do you solve a question like this?

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)

What is the distance between point a and b