Answer:
Step-by-step explanation:
<u><em>The complete question in the attached figure</em></u>
we know that
The equation of a exponential growth function is given by
where
N(t) is the number of bacteria
t is the time in minutes
a is the initial value
r is the rate of change
we have
substitute
Find the value of r
Looking at the table
For t=1 min, N(t)=520,000
substitute in the exponential equation
therefore
You're looking for an inequality of the form , or , or .
Start with
Notice that 375º is the midpoint of this interval of temperatures. If we subtract all sides by 375º, then we get
so we can set and , and we can rewrite this inequality in terms of absolute values as
(
2
x
−
3
)
(
x
2
−
x
−
2
)
Factor
x
2
−
x
−
2
using the AC method.
Tap for fewer steps...
Factor
x
2
−
x
−
2
using the AC method.
Tap for more steps...
(
2
x
−
3
)
(
(
x
−
2
)
(
x
+
1
)
)
Remove unnecessary parentheses.
(
2
x
−
3
)
(
x
−
2
)
(
x
+
1
)
Answer is D. Y=11 12*y-(-132=0
12y+132=12•(y+11)