A12-gallon tub has a faucet that lets water in at a rate of 3 gallons per minute, and a drain
that lets water out at a rate of 1.5 gallons per minute. if you start with 3 gallons of water
in the tub, how long will it take to fill the tub completely?

Ihonestly don’t understand this at all

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).