Question

A store had 150 laptops in the month of January. Every month, 20% of the laptops were sold and 10 new laptops were stocked in the store.

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

f(n) = 150 - 0.8 × f(n - 1) + 10, f(0) = 150, n > 0
f(n) = 0.2 × f(n - 1) + 10, f(0) = 150, n > 0
f(n) = 0.8 × f(n - 1) + 10, f(0) = 150, n > 0
f(n) = 150 + 0.8 × f(n - 1) + 10, f(0) = 150, n > 0
is it C ? I will give fan and medals

Answer 1

@Thesmarterone

Answer 2

@gaos

Answer 3

f(n) = 0.8 × f(n - 1) + 10, f(0) = 150, n > 0
because if n=1
f(1)=0.8xf(1-1)+10
f(1)0.8x150+10
0.8x150 representes the 20% sell
+10 represent the new laptop

Answer 4

Thanks that makes sense @gaos

Answer 5

anytime