Can you solve these problem and show work for each one of these .

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

Which expression is equivalent to -5(3x - 6/7)

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.