Tubes of oil paint can be bought in sets of 5 for 13.75 or bought sepretly for the unit price. what would be the price of two tubes of this oil paint

Which one is the correct answer, and why?

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265

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.