$478 by using the provided formula ...
Explanation : income = $523 , expense = $ 45 , profit =523-45= 478
409,200,000,000= 4.092 × 10^11
Step-by-step explanation:
questions 8, obviously the mid part of the parabola is 3, that is the axis of symmetry.
question 9, only one solution because you only have one parabola.