Heyy um what does it mean if someone puts their thumb and index finger in a circle and tells you to look?

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )