Acircular region has a population of about 15,500 people and a population density of about 775 people per square kilometer. find the radius of the region. round your answer to the nearest tenth.
i got 1.4, but it's wrong. anyone know the rough steps to this problem?

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

Given the graphed function below which of the following orders pairs are found on the inverse function

Select the two pairs of figures that are similar.