The shift from agriculture to industrialization illustrates that
a.
land has become scarce
b.
economies change over time
c.
society has become more materialistic
d.
people prefer working in mills to working the fields

B. economies change over time

Explanation:

Agriculture was rather bound to the traditional economy and industrialization is linked to capitalism.

At the point when the United States of America moved agribusiness to industrialization, it denoted the start of the modern era of the industrial revolution.

Advanced technologies are quickly rising causes the U.S. economy to rise and the nature of the Americans' life shows signs of improvement and better because of various occupations.

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27