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10 September, 15:45

The height and weight of several adults were recorded:

Height (ft)

4.65

5.15

5.6

5.85

6.2

6.35

Weight (lbs)

95.9

118

141

151

167

186

It was discovered that this can be modeled by the equation

y = 50.2x-140

where x is height in feet and y is weight in pounds.

What height corresponds to a weight of 130 pounds? Round to the nearest hundredth.

A 6.25 ft B 5.85 ft C 6.68ft D 5.38 FT

+2
Answers (1)
  1. 10 September, 18:28
    0
    D) 5.38 ft

    Step-by-step explanation:

    Plug y as the weight

    130 = 50.2x - 140

    add 140 to both sides

    270 = 50.2x

    divide by 50.2

    x = 5.37848606

    5.37848606 rounds to 5.38
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