Substitution method y=2x+6 which is 2x-y=2

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

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5