Celina is making squares with toothpicks. She notices that in making one square, she uses 4 toothpicks.
She continues the pattern and notices that it takes 7 toothpicks to build two squares side by side. To build three squares in a line, she will need 10 toothpicks. If she continues this pattern, how many toothpicks will she need to make 90 squares in a straight line?
How many squares can she build in this pattern if the box she has contains 1,000 toothpicks?
Explain how you figured out one of these answers.