Using the graph of a pay scale below. Determine how many years of experience are necessary to make $60,000, $70,000 $60,000 $50,000 $40,000 $30,000 $20,000 $10,000 SO Less than 3 years 6 years 9 years 12 years 15 years 18 years 21 years 24 years 27 years 3 years but less but less but less but less but less but less but less but less or more than 6 than 9 than 12 than 15 than 18 than 21 than 24 than 27 years years years years years years years years See larger version of chart. View long description. O a 15 years but less than 18 years Ob 18 years but less than 21 years O c 21 years hut less than 24 years O d 12 years or more Time left for this