Final answer:
The terms of the expression 6p + 5n are 6p and 5n, representing the number of granola bars in boxes of plain and with nuts respectively.
Step-by-step explanation:
The terms of the expression 6p + 5n are 6p and 5n. '6p' represents the number of plain granola bars in 'p' boxes, where each box contains 6 granola bars. '5n' represents the number of granola bars with nuts in 'n' boxes, where each box contains 5 granola bars with nuts. The numbers 6 and 5 are the coefficients, and 'p' and 'n' are the variables. The expression as a whole gives the total number of granola bars Adam bought, combining both plain and with nuts, based on the number of boxes he has of each type.