650 + 75*w < 150*w, where w is the number of weeks. Solve this equation 650 < 150w - 75w 650 < 75w w < 650/75 = 8.666. The problem wants you to find the maximum integer value of " w ", when inequality (1) is still valid. So, you round the value of 8.666 to maximal lesser integer, which is 8. ANSWER. During 8 weeks, the print ad costs less than online ad.