Question: Can you provide an in-depth solution for: Theo bought a pen for $2 and a piece of paper that cost $1 less than three times the price of the pen. She gave the cashier $10. What is the amount of change Theo received?Hey there, could you help me solve this math problem: Theo bought a pen for $2 and a piece of paper that cost $1 less than three times the price of the pen. She gave the cashier $10. What is the amount of change Theo received?
Answer: 
Three times the cost of pen is $2 x 3 = $6.
The cost of paper is $6 - $1 = $5.
The total cost for the pen and paper is $2 + $5 = $7.
Theo received $10 - $7 = $3 change.