Answer:
OPTION A:
, where
.
Step-by-step explanation:
Given: 
Taking
common outside in the denominator, we get:

will get cancelled on the numerator and denominator, we get:

we know that the denominator can not be zero.
That means, 1 + 8x
0.


So, the answer is:
, where
.
Answer:
0.28985507246
Step-by-step explanation:
Answer:
X < -3
Step-by-step explanation:
4 - 3x > 13
First move the 4 over, subtract from both sides:
-4 + 4 - 3x > 13 - 4
-3x > 9
Now move the -3 over, divide on both sides.
When you multiply or divide by a negative, you have to reverse the sign.
-3x/-3 < 9/-3
X < -3
Answer:
B, C, D, and F
Step-by-step explanation:
The graph is an exponential curve rising upwards. By looking at the graph we can tell that the graph is only increasing, it touches the y-axis at 30 and it lies in the 1st quadrant.
So, option A is wrong, as the graph is increasing.
Option B is correct. The point where graph crosses/touches the y-axis is the y-intercept. So the y-intercept is 30.
Option C is correct. As the graph lies in 1st quadrant and is positive over the entire range of values.
Option D is also correct as the graph is increasing over entire range of values.
Option E is incorrect as y-intercept is 30.
Option F is correct. Since the graph is increasing, this means with every passing year the number of dolphins is increasing.
Therefore, the correct options are: B, C, D, and F