The first option is a function as it passes the vertical line test and as each domain (x value) is paired with exactly one range (y value)
Answer:
The tax Jenna and Richie pay on the gifts is <u>$3.85</u>.
Step-by-step explanation:
Given:
Cost of scarf = $12.45.
Cost of necklace = $35.65.
State tax charges sale tax = 8%.
Now, to find the sales tax paid on the gifts.
So, adding the price of the gifts:

Thus, the total amount of the gifts = $48.10.
Now, getting the sales tax the state charges:




<em><u>The tax nearest to cent = $3.85</u></em>
Therefore, the tax Jenna and Richie pay on the gifts is $3.85.
The answer for the first one would be 4 just divide both 16 & 4.
The answer for the second one would be -7 just divide both 63 & -9.
The answer for the third one would be -36 just multiply both 12 and -3.
The answer for the fourth one would be -120 just multiply -10 and 12.
The answer is C
By the way, that expression means "n choose k". Hope I helped!