A national bank was established in the U. S. to: A) promote trade and economic growth

B) pay for political campaigns

C) create new taxes

D) count the votes in the presidential election

Option A

Explanation:

In simple words, the national bank was created in the united states to ensure the economic growth of the country. The core purpose of such banks was to promote the local industries by providing them suitable amount of finances at appropriate rate. Such banks were controlled by the federal government. Thus, from the above we can conclude that the correct option is A.

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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