Step by step solution

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! )

What is the midpoint of the line segment graphed below

The eagle club wants to build a chain of 2,505 dominoes. if they have already set up 807 dominoes, how many more do they need to add to meet their goal?