THHIS IS VERYYY IMPORTANT.. PLEASE HELP
Which of the following best describes America's dependence on foreign oil? Select one: a. The U. S. imports much less oil than it exports. b. American consumption of oil has dramtically decreased over the last 20 years. c. America imports oil from Mexico but very little from the Middle East. d. the U. S. is dependent on foreign oil to meet its energy needs.

The answer is D

Explanation:

The majority (almost all) of the oil used in the US is imported from the middle east.

c) the invasion of the shang

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