Question

Please explain and solve:
A roast turkey is taken from an oven when its temperature has reached 185°F and is placed on a table in a room where the temperature is 75°F. The graph shows how the temperature of the turkey decreases and eventually approaches room temperature. By measuring the slope of the tangent, estimate the rate of change of the temperature after an hour.

Answer 1

hmm where is the graph?

Answer 2

Oh yeah sorry, just sec

Answer 3

Here

Answer 4

Sorry for the quality

Answer 5

lol ok i will try to understand as its all red..

Answer 6

ok to solve this u have to do work on the graph... u know how to draw tangent?

Answer 7

Use that one))

Answer 8

No, honestly, i didn't get how to do that:( Could you explain?

Answer 9

ok.. tangent is a line which cuts the curve just at one point..
for example..
in this gaph which i had drawn i drew the tangent at point X.. as u can see the line of tangent is cutting the curve just only at one point.. do u get it?

Answer 10

Yes

Answer 11

same way u have to draw the tangent at point P on your graph... can u draw and post it here so i can tell if its right or wrong. if u dont mind..

Answer 12

Ok, i will try

Answer 13

ok i will wait..

Answer 14

So P should divide the graph into 2 parts?

Answer 15

hmm not divide u have to draw a tangent .. let me tell u how it would look like.