n packages of pencils at $1.10
m pads of paper at $2.40 each
Then the expression:
1.1 n + 2.4 m represents the Total amont for her purchase
the term 1.1 n represents the amount she is paying for n packages of pencils.
So the answer is option C for that question.
The term 2.4 m represents: Cost of m pads of paper at $2.40 per pad which is your option C for that question.
The total expression 1.1 n + 2.4 m represents Total cost of n packages of pencils and m pads of paper , which is again option C in your list of answers.