we have
------> equation 
------> equation 
Multiply by
the equation 
------> equation 
Sum equation
and equation 

Substitute the value of x in the equation 

therefore
the answer is the option B

Answer:
In two years erin grew 7 inches
Step-by-step explanation:
42 - 35 = 7
Answer:
The discriminant is 40
Step-by-step explanation:
First, rewrite the equation as
so that the equation is in the form of
. Thus, the discriminant is
. This tells us that since the discriminant is greater than 0, then there are 2 real solutions.
Yes that statement is true.