Question

Use the graph of y=e^x to evaluate the expression e^-2.8 round the solution to the nearest tenth if necessary

Answer 1

In this item, I assume that the variable "e" here stands for the Euler number which is equal to 2.718. Raising this number to the exponent -2.8 will give us an answer of, 
                                    y = e^-2.8 = (2.718)^-2.8 = 0.0608
Therefore, the value of y is approximately 0.1.