Not understanding it so just wanna ask for help.

B. The graph crosses the y-axis at (0, 7), increasing from x = -10 to x = -2 and decreasing from x = -2 to x = 10

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1

-2 is the right