If , then…

MATHEMATICS · Single correct · AP · AP Precalculus · Exponential and Logarithmic Functions · Exponential and Logarithmic Functions

Problem

If f(2x+3y,2x−7y)=20xf(2x + 3y, 2x - 7y) = 20x, then f(x,y)f(x, y) equals (1) 7x−3y7x - 3y (2) 7x+3y7x + 3y (3) 3x−7y3x - 7y (4) x−yx - y

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