Which key feature depends on the leading coefficient and the degree of the function?
A. Axis of symmetry
B. End behavior
C. Intercepts
D. Rate of change

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answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,