The graph shows the percentage of americans living in urban settings from 1790 to 1990. if the trend continues what is the likely percentage of people who live in urban settings in the year 2030? a. less than 10% b. 40% to 60% c. 60% to 80% d. more than 80%

D)more than 80%

Explanation:

Judging from the given graph

let us take in year 1840 percentage increase is 25%

and for year 1990 it is 75 %

Considering it be constant rate then slope of line is

for year 2030 percentage increase is

y-25=63.33

y=83.33

The percentage is most likely greater than 80%

simplify brackets

8 - 2a - 7 = a + 40

simplify 8 - 2a - 7 to -2a + 1

-2a + 1 = a + 40

add 2a to both sides

1 = a + 40 + 2a

simplify a + 40 + 2a to 3a + 40

1 = 3a + 40

subtract 40 from both sides

1 - 40 = 3a

simplify 1 - 40 o -39

-39 = 3a

divide both sides by 3

-39/3 = a

simplify 39/3 to 13

-13 = a

switch sides

a = -13