Need help with attached problem. It is college algebra.

C The average global temperature increase T (in F) is expressed by T(k) = 1.03k In , where CO is the preindustrial amount of 0 carbon dioxide, C is the current carbon dioxide level, and k is a constant. Suppose 8 S ks 19 when C is double the value of C0. Use T(k) to nd the range of the rise in global temperature T. The temperature rise is between |:|F and |:|F. (Do not round until the nal answer. Then round to the nearest whole number.)