Find the unit rate. Write an equation to describe the relationship between the quantities.
1. It costs $42 for every 3 feet of fence. Let
y = the total cost and let x = the number of
feet of fence.

unit rate = 14x

y = 14x + 0

Step-by-step explanation:

y = mx

y = 14x

$42 for 3 feet, how much for one feet?

42/3 = 14

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step-by-step explanation:

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11