Please solve below with very detailed explanations This came up in my advanced functions class and I just don’t

Question

Please solve below with very detailed explanations. This came up in my advanced functions class and I just don’t

get it at all.

Note that I’m a mature student who is taking university prep courses to apply for university –it’s been 7 year’s since I’ve done high school math! Thanks!

Also, what type of math is this?

Math