20 POINTS AND WILL MAKE BRAINLIEST IF YOU HELP ME

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?

The longer leg of a 30-60-90 trangle is 18