Avani went to the store to buy some walnuts. The price per pound of the walnuts is $4.75 per pound and she has a coupon for $3 off the final amount. With the coupon, how much would Avani have to pay to buy 3 pounds of walnuts? Also, write an expression for the cost to buy p pounds of walnuts, assuming at least one pound is purchased.​

The height of a birch tree, f(x), in inches, after x months is shown in the graph below. how much does the birch tree grow per month, and what will be the height of the birch tree after 10 months? a. the birch tree grows 1 inch per month. the height of the birch tree will be 16 inches after 10 months. b. the birch tree grows 2 inches per month. the height of the birch tree will be 26 inches after 10 months. c. the birch tree grows 3 inches per month. the height of the birch tree will be 36 inches after 10 months. d. the birch tree grows 2 inches per month. the height of the birch tree will be 24 inches after 10 months.