It takes doug 3 days to reroof a house. if doug's son him, the job can be completed in 2 days. how long would it take doug's son, working alone, to do the job?

Adifferent website gives the cost for the first train as £56.88 and the second train as £20.11 with a £9.50 charge for cycle storage for the whole trip. how much would the journey cost you?

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

Which is the focus of a parabola with equation y2=4x