What fraction of the catapults flung a marshmallow 30 inches or less?

The graph shows the prices of different numbers of bushels of corn at a store in the current year. the table shows the prices of different numbers of bushels of corn at the same store in the previous year. previous year number of bushels price of corn (dollars) 2 10 4 20 6 30 8 40 part a: describe in words how you can find the rate of change of a bushel of corn in the current year, and find the value. part b: how many dollars more is the price of a bushel of corn in the current year than the price of a bushel of corn in the previous year? show your work.

What expression is equivalent to 42x-56y

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)