How do you do the fourth lesson in module 3's quiz?

Question

I need the answer!

Answer 1

what's causing problem excatly?

Answer 2

solving the quiz?

Answer 3

which answer is causing the probelm?

Answer 4

the named arguments quiz?

Answer 5

first answer is 8. second is calc(step:2 to:99 from:5)

Answer 6

Solving it