20. After a cook baked a cake out of the gues and places iton the benele tocol the fempérature (degrees C) at the cake's

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20 After A Cook Baked A Cake Out Of The Gues And Places Iton The Benele Tocol The Femperature Degrees C At The Cake S 1 (725.19 KiB) Viewed 69 times

20. After a cook baked a cake out of the gues and places iton the benele tocol the fempérature (degrees C) at the cake's lanthe eğinen by the teretion f (t) = 20 + 150 et/2 where t is the time in hours since the cake's placed on the bench. a) Find the temperature at the cakes centre when the cake is taken on tof theoren 6) Find the lines of f(t) as to Showing your reasoning! c) Findl by hand the exact rate of charge of the temperature at the cakes centre at fime 15! how", including urods for this I rate. The cooko decides that the cake is colenough to be taken out of the cake pen when the temperature at its contre lowess to Hodegrees C. Find when this will happen, both in exact form andas á decimal approximation to at least 2 decimal places, showing all worting.