Samantha is a school leader. She wants to decide whether makeup should be allowed in school or not? So she collected random samples of 200 girls regarding girl's make up preference. There are 650 girls in her school.

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.