Which of the following would cause the real exchange rate between pesos and U. S. dollars (in terms of pesos per dollar) to decrease/lead to a weaker dollar?

A. An increase in net capital flows from Mexico to the United States

B. An increase in the real interest rate in Mexico relative to the United States

C. A doubling of prices in Mexico and the United States

D. A decrease in oil exports from Mexico to the United States

E. An increase in the balance of payments on the current account in the United States

The did multiple things that the economy

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.