Find f(5) in the piecewise function

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.