Answer:
71v + 72
Step-by-step explanation:
9v-8(10v-9) distribute 8 × 10v, 8×9
9v - 80v+72
71v + 72
Answer:

So we want to find this probability:

And using the normal standard distirbution or excel we got:

Step-by-step explanation:
Let X the random variable that represent the age of men married of a population, and for this case we know the distribution for X is given by:
Where
and
We are interested on this probability
The sample size is n =66. We can use the z score to solve this problem:
If we find the z score for 25 we got:

So we want to find this probability:

And using the normal standard distirbution or excel we got:

Answer:
A.
Step-by-step explanation:
When you simplify the equation down by getting rid of (x + 1) (and that creates a hole in the graph), you should end up with A as your answer.