The answer is 38, because if you take away the 15 he bought afterwards (34-15) you get 19, and then since he sold half his collection you would double that (19×2) and that's 38.
7 Miles Per Hour Is The Answer.
Answer:
1.06 x 
(3sf)
Step-by-step explanation:
using compound interest formula A = P
from 95 to 08 is 13 yrs
Total Revenue = (5.02 x 
)
= 1.057 x
Answer:
Step-by-step explanation:
You could either do what I did in the above answer, or you could do this:
It does not matter how you write it, as long as you understand the concept!
I am joyous to assist you anytime.
Answer:
Exponential
Step-by-step explanation:
<em>Starter:</em>
According to the title:
"Every day, half a bacteria population dies."
Exponential: y = ab^x ( b > 0 , b ≠ 1)
So the answer is C.
<em>Calculations:</em>
An exponential model is of the form y = a • b^t.
If you start with population of 500 million bacteria
t = 0
so 500 million = a • b^0 = a
Since every day half the population dies then in 1 day population will be 250 million
so a = 500 million, y = 250 million and t = 1
250 million = 500 million • b^1
b = 0.5
Therefore your equation would be
y = 500 million (or whatever the pop) • 0.5^t
Where t = number of days
This could also be written in exponential form ( e = 2.73)
