Simplify the expression 8 - 2x + 12x - 3. show that your answer is true for x=2

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.

Given abc find the values of x and y. in your final answer, include all of your calculations.