The percent of the u. s. population living in metropolitan areas has increased since 1950. which model relates the percent as a function of the number of years since 1950?

i agree because i see the other persons thinking is clear

b

step-by-step explanation:

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.