Answer: f(12) = 137, f(-7) = 42
Step-by-step explanation: In a function, what you want to do is plug in the value they give you for x. This means you substitute x with the value they are looking for.
In this case, they are looking at 12 and -7. Let's do 12 first.
The equation becomes (12^2) - 7. 12^2 is 144, and 144-7 is 137.
Now we do -7. The equation becomes (-7)^2 - 7. -7^2 is 49, and 49 - 7 is 42.
Hope this helped!
Answer:
Answer Is in the Following Attachment
Step-by-step explanation:
Answer:
22 grams
Step-by-step explanation:
loses 50% of it's mass per 22 years
so after 22 years the mass would be 44 grams
22 years later would leave 50% of 44 grams = 22 grams
Answer: 4
Step-by-step explanation: you use division, or your calculator, divide $15.00 by $3.50 and you get 4.28, so you can by 4 full gallons with $1.00 left over!
Answer:
C
Step-by-step explanation:
Check all points:
A: x=0, y=10, then from the equality 
follows that A lies on the line.
B: x=3, y=13, then from the equality 
follows that B lies on the line.
C: x=8, y=2, then from the inequality 
follows that C doesn't lie on the line.
D: x=5, y=15, then from the equality 
follows that D lies on the line.
