help me with rate of change please

Question

joehoffy · Answer

i already did this: Part 1

You will need to measure five different people. Record your measurements on a piece of paper. Using a tape measure or ruler, measure the length (in inches) of a person’s left foot and then measure the length (in inches) of that same person’s forearm

joehoffy · Answer

i need help with this: Part 3 Compare rates of change.

The equation below can be used to find the length of a foot or forearm when you know one or the other.

(length of the foot) = 0.860 • (length of the forearm) + 3.302 

If you let y = length of the foot and x = length of the forearm, this equation can be simplified to 
y = 0.860x + 3.302.

Using this equation, how long would the foot of a person be if his forearm was 17 inches long?

joehoffy · Answer

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