You know that 15% of a number n is 12. how can you use this to find 30% of n? 45% of n? explain

Me because some of question i don’t understand

Consider the functions below. function 1 function 2 function 3 select the statement which is true about the functions over the interval [1, 2] a b function 3 has the highest average rate of change function 2 and function 3 have the same average rate of change. function and function 3 have the same average rate of change function 2 has the lowest average rate of change d.

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83