B, when x approaches negative infinity B(x) approaches positive infinity and when x approaches positive infinity B(x) approaches positive infinity.
Step-by-step explanation:
B(x) is a quadratic function, so B(x) will have the same end behavior for both x-> +infinity and x-> -infinity. If we multiply (3-x)(6-x), the negative x's become a positive x^2 because it is a double negative. This means that the parabola opens upwards and the end behavior of B(x) approaches positive infinity in both directions.
Attached is a snip of a Desmos graph of the problem, just in case it helps to see it.
1. Distribute the -2. multiply-2 with 5x and 8. it will be -10x-16=14+6x. For me, i make small numbers negative or positive than big ones. Add 16 to both sides. it will be -10x=30+6x. Subtract 6x. -10x-6x=-16x. Divide both sides by 16. x=30/16= 1 and 14/16