The product of a number and negative 3 increased by 8 is 20

Ineed ! i can’t figure out this graph

Me get the answer and explain to me the steps to solve it would be greatly appreciated : )

Catherine saved some money and plans to add the same amount each week to her savings account. the table represents the number of weeks that she will save, x, and the total amount of money that she will have in her account, y. weeks, x dollars in account, y 4 74 6 86 9 104 11 116 which linear equation represents catherine’s situation?