Coefficient: a number that multiplies a variable.

find a coefficient of x in –7x, and a coefficient of y in y.

The coefficient of X would be the -7 because you are multiplying x by -7.

Because Y is by itself, there is no coefficient, but some people would say the coefficient is 1 because any number/ variable multiplied by one remains the same.

the answer is b.

step-by-step explanation:

identity property is where 0+whatever number=whatever number. basically 0+ a number.

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