A+ Answers
Thehonest
1.doc1. Find the inverse of the function of
(
)
6
3
-
=
x
x
f
.2.
3
a
log
3.
28
log
a
4.
3
14
log
a
5.
2
49
a
log
6.
6
2
a
a
log
log
7. The bacteria Escherichia coli are commonly found in the human bladder. Suppose that 3000 of the bacteria are present at time t=0. Then under certain conditions, t minutes later, the number of bacteria present is
20
2
3000
t
)
(
)
t
(
N
=
How many bacteria will be present after
a) 10 minutes?
b) 20 minutes?
c) 30minutes?
d) 40 minutes?
e) 1 hour?
8. Given
(
)
2
4
+
=
x
x
x
f
, find(
)
x
f
1
-
.9. Which is the graph of the function,
10. Refer to the graph below. Indicate the answer with either yes or no, and give reason to verify your answer.
a) Is the graph that of a function?
b) Is the graph that of a one-to-one function?
