A Kiln Is Used to Heat Materials to High Temperatures $[0,10]$

Essay

A kiln is used to heat materials to high temperatures. Graph each of the following functions on the interval $[0,10]$ . Use $[0,450]$ for the range of $A(t)$ . Use a graphing calculator to determine the function that best describes the temperature of the material $A(t)$ (in degrees Fahrenheit) $t$ minutes after it is placed in the kiln, if the initial temperature of the material was 50 degrees Fahrenheit.
(a) $A(t)=550-100 e^{.1 t}$
(b) $A(t)=550 \log (t-1)$
(c) $A(t)=550-500 e^{-.15 t}$
(d) $A(t)=t^{2}-40 t+550$