Answer:
the standard form of the equation is: a. y=7x^2-42x+67
Answer:

Step-by-step explanation:
Solution is below as well as graph for proof
Hello!
The line on the two lines means they equal each other
5x + 10 = 40
Subtract 10 from each side
5x = 30
Divide both sides by 5
x = 6
The answer is 6
Hope this helps!