answersLogoWhite

0

Assuming the spaces would have held plus signs...

(0.5n + 5) times 2 is n + 10

(n + 10)(10n + 7) is 10n^2 + 107n + 70

You can either add three to that (+ 73) or multiply it by three

30n^2 + 321n + 210

User Avatar

Wiki User

9y ago

What else can I help you with?