PLEASE HELP!! PLEASE GIVE EXPLANATION!

As time increases, the amount of money increases as shown by when x increases, so does y.

For part B, there is an increase of 45 dollars in the account per month.

You can find this value by calculating the change in y over the change in x. For example:

(557-467)/(8-6)

Evaluate the parenthesis and simplify:
90/2 = 45 dollars per month

It should be a or d i’m not sure

The correct answer is $90