Question 1040431
{{{T(t) = 38 + 43*e^(-0.058t)}}}



{{{T(20) = 38 + 43*e^(-0.058*20)}}} Replace EVERY copy of 't' with 20. Then use a calculator to evaluate



{{{T(20) = 38 + 43*e^(-1.16)}}}



{{{T(20) = 38 + 43*0.31348618088248}}}



{{{T(20) = 38 + 13.479905777947}}}



{{{T(20) = 51.479905777947}}} This is approximate



{{{T(20) = 51.5}}} Round to the nearest tenth



The final answer is approximately 51.5 degrees