8.4 or 8 2/5 or 42/5
2x1.2
4(4.5-2.4)
4 x 2.1
8.4
ANSWER: 8.4 or 8 2/5 or 42/5
please mark brainliest if my answer is correct;)
C
D is too low and the others are above 93 so its C
Answer:
Center (-5, 2) and radius 5
Step-by-step explanation:
The equation for a circle is 
Where (h, k) is the center and r is the radius.
The answer is B. Take the same point on each of the figures and count how far they are away horizontally and vertically.
Given that there were 30 bacteria present originally.
a=30
Also given that the number doubles every one hour.
After one hour the count =2×30=60
Since the count doubles every hour it forms a G.P. with r=2
a,ar,ar2........
The count at the end of 2nd hour=ar^2=30×2^2=120
The count at the end of 4th hour=ar^4=30×2^4=480
The count at the end of 8th hour=ar^8n=30×2^8=7680
etc.
The count at the end of n^th hour=ar^n=30×2^n
Also, the equation y=30*(2)^8/1 give the same result y= 7680
