Which expression is equvialent to 2x2 + (4x-6x2) + 9 - (6x+3)? a -4x2 - 2x + 12 b -4x2 - 2x + 6 c -10x + 6 d 18x + 12

Hello there!

The correct answer is option B

2x² + (4x - 6x²) + 9 - (6x + 3)

Just take them out of the parentheses

2x² + 4x - 6x² + 9 -6x - 3

Combine like terms

2x² - 6x² + 4x - 6x - 3 + 9

= -4x² - 2x + 6

Thus,

The correct answer is option B

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.

The correct graph is the second one, with the points being at (-6,0), (2,0) and reaching down to (-2,-8)