4. Expand and simplify the expression: (2 points)
x(4y + 2)
4xy + 2x
Ox(y + 2)
4xy + 6x
12xy + 3x

5. Expand and simplify the expression:
(2 points)
2 (3x - 1.2 + 4)
6x + 5.6
O 12x + 4.6
9x + 4.6
4x + 6.6
Can some one help me answer these two questions.

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

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.

What are the solutions of the system? y = x^2 + 2x +3y = 4x - 2a. (-1, -6) and (-3, -14)b. (-1, 10) and (3, -6)c. no solutiond. (-1, -6) and (3, 10)