The monthly mortgage payment in dollars, P, for a house is a function of three variables: P=f(A, r,N). Where A is the amount borrowed in dollars, r is the interest rate, and N is the number of years before the mortgage is paid off. A) f(92000,14,30)=1090.08. What does this tell you, in financial terms?
B) ∂P/∂r (92000,14,30) =72.82. What is the financial significance of the number 72.82?
C) Would you expect ∂P/∂A to be positive or negative? Why?
D) Would you expect ∂P/∂N to be positive or negative? Why?

true

step-by-step explanation:

it is more then likely a review to you prepare for an upcomign test or quiz

step-by-step explanation:

rectangles are made up of 4 right angles, which means that a side and a base meet perpendicular to one another.   their slopes then have to reflect perpendicular slopes.   perpendicular slopes are opposite reciprocals of one another.   for example, if the slope of one line is +2/3, then the perpendicular slope to that would be -3/2.   so we look for that combination in our choices.

all of them satisfy that condition (so what's the question, i guess? )