Pleaaase help I'm being timed! Dr. Potter provides vaccinations against polio and measles. Each polio vaccination consists of 4 doses and each measles vaccination consists of 2 doses. Last year, Dr. Potter gave a total of 54 vaccinations that consisted of a total of 142 doses.
Create and solve a system of equations to determine how many polio vaccinations and measles vaccinations Dr. Potter gave last year.