The line of best fit for this data is y = 0.864x + 31.15. using this equation, to predict christine’s best javelin throw for the year 2005. remember, x = 0 for 1997.

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! )