Help Please It for Euler's Number

Question

1)Evaluate e^-2.7 to the nearest ten-thousandths.

2)Evaluate -e^5/2 to the nearest hundredth

3)Evaluate e² +e^-2 to the nearest hundredth.

Answer 1

e=2.718281828.......... (to the power of) ^-2.17=1/(2.718.......^2.17)=.1141776....

Figure the power first; then hit 1/x.

Answer 2

e is the base of natural logarithms and is approximately 2.718.

You need to have either a table of natural logarithms or a calculator with the exponential function in it.

You just need to be careful with signs!