HELP! MATH

cold yam is put into a hot oven, the temperature of the yam begins to rise. The rate R in degrees per minute at which the temperature rises is governed by Newton's Law of Heating, which says that the rate is proportional to the temperature different between the yam and the oven. If the oven is at 350 degrees and the temperature of the yarn H degrees F.

a) write a formula giving R as a function of H

i know that the proportion formula is y=kx. would i put the 350 in for y and leave x as the variable? i don't know what to do. thank you.

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asked by Kate
  1. y=kx is a general formula but I think the question is asking for you to be more specific than that. The temperature difference is 350-H and the rate is R.
    See if R = k(350-H) looks right to you.

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    posted by DrBob222

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