I’m taking a math placement exam tonight, and was going through a practice test because my math skills have been in hibernation for a looooooong time. I think the last time I actually opened a math book was 10 years ago. I’m going back to school to (hopefully) become a nurse, and (possibly) eventually a CDE somewhere down the line.
I did relatively well — I needed to look a few things up (formulas and some such) but I think I’m pretty well prepared for the test. There is one question, however, which I have NO idea how to solve.
3^4 (-8.3) (-10) -20
The answer key says this somehow is equal to -22. Can anyone explain how this is done — without a calculator?