Raise d to the 6th power

How can we find the measure of an exterior angle if we know the measurement of an interior angle

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

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.