It’s um um.......y......e......a.......h. Yeah
So J is jelly beans and T is trail mix :)
so J= $3.50
T= $1.50
The formula of a slope:

We have the points A(-7, a) and B(c, d).
Substitute:

Exception: c ≠ -7.
A person could use a check or cash. With a check they don't have to worry about carrying cash but the check could bounce and cost them a fee. With cash they know they have enough but it doesn't build credit and is easy to misplace or misuse.