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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.
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Solved and explained.
All necessary explanation words are pronounced, so you know them and know the subject.