Which best describes the capture of constantinople in 1453? russian soldiers attacked the weaker eastern walls with superior force. the sultans forces penetrated its land wall through direct infantry assaults. portugese naval forces laid siege around the city's inner harbor. the hapsburg emperor's armies used moveable towers to break the ramparts.

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.

The answer is c. i think hope this ! can you me with my question ?