B is a variable that is as far as it can be solved
You would do ten columns of ten and then you would just do the remaining.
Answer:
f(1)=10
f(n)=nf(n-1)+5
f(2)=2f(1)+5=2*10+5=25
f(3)=3f(2)+5=3*25+5=75+5=80
f(4)=4f(3)+5=4*80+5=320+5=325
f(5)=5f(4)+5=5*325+5=1625+5=1630
Step-by-step explanation:
