# alg 2.

posted by
**Miley**
.

solve. we can use a calculator on this part...

2e^-x+4=21. how do i do this problem.

i know that you subtract 4, but what do you do after that?

posted by
**Miley**
.

solve. we can use a calculator on this part...

2e^-x+4=21. how do i do this problem.

i know that you subtract 4, but what do you do after that?