<span>2x – 5 > 7
Add 5 to both sides
2x > 12
Divide 2 on both sides
Final Answer: x > 6</span>
The axis of symmetry is X= -0.9999995
<u>The growth factor</u>:
⇒ <em>is the </em><u><em>base in the exponent</em></u><em>:</em>
<em> ⇒ the larger it is ⇒ the greater the growth factor is!</em>
<em />
<u>Let's Analyze our choices:</u>
- c(t)'s growth factor: 5/2
- a(t)'s growth factor: 5/6
- d(t)'s growth factor: 3
- b(t)'s growth factor: 1/50
<u>The greatest growth factor is 3</u>
<u />
<u>Answer: d(t)</u>
<u></u>
Hope that helps!
So, I didn't quite understand your question clearly, but I'll try my best to answer it.
So, the first question is quite simple: Did the runner have a % decrease in his time or an increase.
Well, 7:45 is minor than 5:51. So, his time decreased.
2nd question:
The percent of change. Well, first things first 7:45 has 2 different units, wich are minutes and seconds, I suppose. Same goes for 5:51.
So let's put everything in seconds. multiply both the 7 and 5 for 60(for every minute has 60 seconds.)
That means:
7*60= 420+45 = 465.
5*60=300+51=351.
Now, let's do the math itself:
465 -> 100%
351 -> x%
Is equal to about 75,5%
How much did it decrease then?
(75,5-100)%= 24,5%, approximately