Which phrase is the best description of a scatter plot in which the variables correlated with r=-0.96? strong positive correlation strong negative correlation weak positive correlation weak negative correlation

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! )