The words or sentences
To determine the meanings of challenging words, the reader should look at the
around the unknown word.
Albo
Mark this and return
Save and Exit
Next
Submit

The words or sentences  for the meanings of challenging words, Albo ,Mark this and return ,Save and Exit ,Next  and Submit is given below

Explanation:

1.Steps To Determine Meaning From Context

Step 1: Look at the words that surround your target word. Step 2: Think about each possible definition for your target word. Step 3: Substitute a different word with the same meaning - a synonym - of each possible definition of your target word.

2.By using word parts (roots, prefixes, and suffixes) to determine the meaning of an unknown word. use context clues to confirm the meaning of an unknown word. use a graphic organizer to achieve a deeper understanding of specific vocabulary words.

3.Mark -a small area on the surface of something that is damaged, dirty.Return -A return, also known as a financial return, in its simplest terms, is the money made or lost on an investment over some period of timeShe returned the garment because it had a mark on the front.

4.Save just writes the contents of your screen to the same file. Quitting Word. To quit Word, select File/Exit. If you made changes without saving, Word will prompt you to save the changes.

5.Next-coming immediately after the time of writing or speaking.

6.Submit-to give (a document, proposal, piece of writing, etc.) to someone so that it can be considered or approved. : to stop trying to fight or resist something : to agree to do or accept something that you have been resisting or opposing.

you didnt give a question

to answer your question:

f(x)= a^x.  if x=0, f(x)=1  if x=1, f(x)=a  if x=1, f(x)=a^a