Mary needs 2 kilograms of potatoes. which number sentence could be used to figure out how many grams of potatoes mary needs? (1,000 grams = 1 kilogram) a. 1,000 ÷ 2 = □ b. 2 × 1,000 = □ c. 2 × 100 = □ d. 100 ÷ 2 = □

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! )