This is for mathematics. The person who answers correctly will get a medal and be followed.

A store had 100 t-shirts. Each month, 30% of the t-shirts were sold and 25 new t-shirts arrived in shipments. Which recursive function best represents the number of t-shirts in the store, given that f(0) = 100?

f(n) = f(n − 1) ⋅ 0.3 + 25, n 0
f(n) = 100 − f(n − 1) ⋅ 0.3 + 25, n 0
f(n) = f(n − 1) ⋅ 0.7 + 25, n 0
f(n) = 100 − f(n − 1) ⋅ 0.7 + 25, n 0

Question

This is for mathematics. The person who answers correctly will get a medal and be followed.

A store had 100 t-shirts. Each month, 30% of the t-shirts were sold and 25 new t-shirts arrived in shipments. Which recursive function best represents the number of t-shirts in the store, given that f(0) = 100?

f(n) = f(n − 1) ⋅ 0.3 + 25, n > 0
 f(n) = 100 − f(n − 1) ⋅ 0.3 + 25, n > 0
 f(n) = f(n − 1) ⋅ 0.7 + 25, n > 0
 f(n) = 100 − f(n − 1) ⋅ 0.7 + 25, n > 0