What's the seventh term

1,2,3,4,5,
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Could answer every question with steps

In the equations, a and b represent the price per night for a room in hotel a and hotel b, respectively, w weeks after september 1 last autumn. what was the price per night in hotel a when it was equal to the price per night in hotel b? a = 240 − 20w b = 320 − 30w

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?