Iserve mom 1/12 and my brother 1/6 of the pot how much of the pot is left what operation should i use

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Precalculus question, image attached.

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.