Estimate ƒx and ƒy at point B. 70 50 30 4 2- -30 C 10 B 0- -10- 0. -30 -2 -10 10 A. -50 -70 -20 -4 0 x (Use decimal notation. Give your answer to one decimal place.) fx (B) ≈ fy(B) ≈

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