F(3)=-18
You just replace x for three for your equation and then use Ofer of operations to solve it.
So f(3)= 21+ 2(3)-5(3)^2
The exponent goes first: f(3)= 21+ 2(3)-5(9)
Next is multiplication: f(3)= 21+ 6-45
Now add: f(3)= 27-45
Finally subtract: f(3)= -18
Hope this helps!
Answer:
B
Step-by-step explanation:
the answer is b because i said so you better listen to me
U mean GCF not HCF right? Also you have got to be joking with 14608 that is a pretty big number for getting GCF
The graph represents a linear function.
The amount left to pay after the eight month is (d) (8,y)
From the question, we have:


On the graph, we have the following observations
- The x-axis represents the number of months
- The y-axis represents the amount left to pay
So, the amount left to pay, after the first month is (1,y) -- as seen on the graph
Similarly, the amount left to pay after the eight month would be (8,y)
Hence, the true option is: (d) (8,y)
Read more about linear functions at:
brainly.com/question/20286983