Answer:
Proved that 
.
Step-by-step explanation:
We have to prove that
Now, Left hand side
= 
= 
{Since we know the formula (a + b)² = a² + 2ab + b²}
= 
{Since 
}
= 
= 
{Since we know the identities:
and 
}
= Right hand side
Hence, proved.
Comment the equation and ill solve it for you
#5 is 5 days
40×5=200
200+150=250
20×5=100
100+150=250
To be a function every input value (x) can only have one output value (y)
On the graph there are 2 out put values for x = 2 so it is not a function.
The answer would be C.
