Write a compound inequality that is represented by the graph

Which of the following is an equation of a line parallel to the equation y=4x+1?

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! )

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount