Question: A rectangular field is to be enclosed on four sides with a fence. Fencing costs $5 per foot for two opposite sides, and $7 per

A rectangular field is to be enclosed on four sides with a fence. Fencing costs $5 per foot for two opposite sides, and $7 per foot for the other two sides. Find the dimensions of the field of area 870 ft ²that would be the cheapest to enclose.

a. 24.9 ft @ $5 by 34.9 ft @ $7

b. 21.1 ft @ $5 by 41.3 ft @ $7

c. 41.3 ft @ $5 by 21.1 ft @ $7

d. 34.9 ft @ $5 by 24.9 ft @ $7

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