Answer:
just plug the numbers in
Step-by-step explanation:
Answer: x2+17x+3
Step-by-step explanation:
2x2+7x−x2+10x+3
=2x2+7x+−x2+10x+3
Combine Like Terms:
=2x2+7x+−x2+10x+3
=(2x2+−x2)+(7x+10x)+(3)
=x2+17x+3
For this case we have to define "y" directly with "x" when there is a constant of proportionality "k", such that:

This is known as direct variation.
On the other hand, if y varies inversely with x we have to:

This is known as inverse variation.
Answer:
, direct variation
Answer:
$488
Step-by-step explanation:
16×20=320
8%×2100
0.08×2100
168
320+168=$ 488