What is No calculators and show your work so I actually understand

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

Twenty points. 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