How do i solve
4x^2 = 20x - 25

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

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

Find the distance from the theater to the library. leave your answer in simplest radical form if necessary. 12 √12 74 √74