The interest for Kim’s loan went from 3% to 4,2 %. By how many percentage points did it increas?

How do you use the elimination method for this question? explain, because i really want to understand!

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.

Write as a product: ac^2–ad+c^3–cd–bc^2+bd