Question 55579
The revenue for a sandwich shop is directly proportional to ites advertising budget. When the owner spent $2,000 a month on advertising, the revenue was $120,000. If the revenue is now $180,000, how much is the owner spending on advertising? 
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rev = k(adbud)
Need to find "k"
120,000= k(2000)
k=60
So, rev = 60(adbud)
180,000=60(adbud)
adbud= 180000/60= $3000
Cheers,
Stan H.