Mathematics

Jonathon Cochran

4 December, 19:45

A store had 175 cell phones in the month of January. Every month, 10% of the cell phones were sold and 10 new cell phones were stocked in the store.

Which recursive function best represents the number of cell phones in the store f (n) after n months?

f (n) = 175 - 0.9 * f (n - 1) + 10, f (0) = 175, n > 0

f (n) = 0.1 * f (n - 1) + 10, f (0) = 175, n > 0

f (n) = 175 + 0.9 * f (n - 1) + 10, f (0) = 175, n > 0

f (n) = 0.9 * f (n - 1) + 10, f (0) = 175, n > 0