The independent variable is the variable being manipulated or changed so that we can study the affects from changing this variable. The dependent variable is the variable studied or desired after the manipulation of the independent variable. The best answer is C since he wants to find out the amount in inches of rain in each month.
110 horses can be found in one day with 44 bales of hay. If each horse needs 2/5 bales of hay each day, just convert 2/5 into a decimal (0.4) and divide 44 by 0.4 to get 110. (That's a lot of horses!)
