You would graph it by starting at (0,4) and then move (1,-7) in the positive and (-1,7) in the negative
now onto the second one,
now, the extraneous part, I don't see either as extraneous, 3 and 12 do work, however, I take it is referring to the root, so if we nevermind the root has ± versions, and say only assuming the value coming from the root is say positive, then
It would be $7.63 because you would do 42 / 5.5 and that would be sales tax. hoped this helped
Answer:
2
Step-by-step explanation:
Kindergarden