What is 45 equivalent to in ratios

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

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

Stefanie is painting her bedroom. she can paint 2 1/3 square feet in 4/5 of an hour. how many square feet can she paint in one hour?