Ihave a question for you guys. george is buying gravel to put on his driveway, the driveway is shown below. he needs the gravel to be 2 cm deep. he can buy gravel in bags that weigh 1 tonne, and cover 1,000,000 cm cubed. how many bags will he need to buy. top is 12.2m and side is 3.0m show your working out .

How do you use the elimination method for this question? explain, because i really want to understand!

If f(x) = 4x – 3 and g(x) = 8x + 2, find each function value a. f[g(3)] b. g[f(5)] c. g{f[g(-4)]}

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.