Arrange 0.1, 0.25, 0.15, 0.5 in ascending order

What is the percent of increase for a population that changed from 438,000 to 561,000

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

Can you me find the missing length. i attached an image.