Abaker decorates 42 cupcakes in 30 minutes she decorates cupcakes at a constant rate how many cupcakes can the baker decorate per minute?

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

Which letters from the table represent like terms? a and b b and c a and d b and d

I’m stuck on this equation, anyone got the answer?