1. population density is the number of people per unit of area. what is the population density of a state that has 1,627,260 people in 1,490 square miles? round to the nearest whole number.
a. 10,521 per square mile
b. 1,050 per square mile
c. 1,092 people per square mile
d. 109 people per square mile

Plz which expression is equivalent to the expression below?

Sandy is upgrading her internet service. fast internet charges $20 for installation and $52.45 per month. quick internet has free installation but charges $57.45 per month. part 1 out of 2 complete the equation that can be used to find the number of months after which the internet service would cost the same. use the variable x to represent the number of months of internet service purchased.

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.