every 10 hours of training monthly pay increases by 100 that means that for every 1 hour monthly pay increases by 10 so the answer must be in the form 10x + something let's take the 1st row in the table 10 hours of training = 1300 monthly pay 10x+ something = 1300 10*10 + something=1300 something = 1200 therefore, monthly pay 10x +1200 hope i helped