D. None of the above. Exponential decay implies constantly decreasing prices, i.e, f'(x) < 0 for all x.
I think you need to explain more for one to answer it.
Please give more details and I'll try to help (if this is meant to be a question)
Answer:
19 = x
Step-by-step explanation:
The square of the tangent segment = The product of (whole secant segment) (the outside part of the secant segment)
BD²= (BA)(BE)
8² = (4 + x - 7) (4) BA = BE + EB
8² = (x - 3)(4)
64 = 4x - 12
64 + 12 = 4x
76 = 4x
19 = x
