Step-by-step explanation:
x² + 4x - 9
= (x + 2)² - 13
a = 2, b = -13.
Dividing 20 by 100 gives us 1%. so 0.2 × 3 = 0.6 so it take 3 0.2s to get to 0.6. meaning 0.6 is 3% of 20.
Answer:
I think the answer would be 3 minutes 32 seconds. I hope this helps.
A. 0, 7 is your answer
hope this helps