A cake is 190°F when you remove it from the oven. You must let it cool to 75°F before you can frost it. The table at
the right shows the temperature readings for the cake.

a. Given a room temperature of 68°F, what is an
exponential model for this data set?

b. How long must the cake cool before you can frost it?

You are choosing between two health clubs. club a offers membership for a fee of $ 28 plus a monthly fee of $ 20. club b offers membership for a fee of $ 20 plus a monthly fee of $ 22. after how many months will the total cost of each health club be the same? what will be the total cost for each club? in __ months the total cost of each health club will be the same.