Question

mr. Edward's buys 2 new knobs for each of his kitchen cabinets. the kitchen has 9 cabinets. how many knobs does he buy?

Answer 1

Multiply 2•9= 18
He buys 18 knobs

Answer 2

This is quite simple! All you need to do is multiply the number of knobs by the number of cabinets!
Aka:9×2=18!