2.603 -> 2.63 -> 2.6312 -> 2.9
Answer:
f
−
1
(
x
)
=
1
2
x
+
5
Explanation:
f
(
x
)
=
2
x
−
10
→
Replace the
f
(
x
)
with
y
y
=
2
x
−
10
→
Switch the places of the x and the y
x
=
2
y
−
10
→
Solve for y
x
+
10
=
2
y
y
=
1
2
x
+
5
The inverse is
f
−
1
(
x
)
=
1
2
x
+
5
ANSWER
a) 5 seconds.
b) 50 inches.
EXPLANATION
The height of the pelican is modeled by,
The pelican enters the when
Divide through by negative 2,
Factor to obtain
This implies that,
Time cannot be negative, therefore the water after 5 seconds.
B) The height of the pelican is modeled by
When
The pelican was 50 inches above the water at time t=0.
The answer is 0
Explanation
.......
2 because there is 2 numbers after the decimal