Numbers like 10, 100, 1,000, and so on are called

They are called powers of 10

Step-by-step explanation:

Represented like this 10^1, 10^2, 10^3

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation:

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540