it is close to Sunset when Brandon is hiking in the woods with his dog. The dog suddenly stops working and starts to grow menacingly had something in the shadows of the forest. Brandon‘s Quincy’s eyes and tries to make out with a loaded his dog. He titan says grip on the leash and strains to hear any movement in the dry leaves. He can also feel his pulse increase, in his mouth feels very dry

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You need to figure out at which x-value does the graph has a tangent line slope of -1.remember, the derivative is the slope of the tangent line. so find the derivative function and set it to equal -1 to find the x-value that will have a tangent line slope of 0.differentiate with the chain rule.    set the derivative to equal -1 and solve for x.      take log base 10 of both sides. also recall that  .    so the x-coord of the point of tangency is .the y-coordinate of this point of tangency can be calculated using the original function:     using point-slope form, the equation of the tangent line is      the x-intercept of this tangent line is when the graph is at y=0.    this rounds off to  .choice c.