Answer:
The probability is 
Step-by-step explanation:
From the question we are told that
The number of members is n = 15
Generally the number of ways of selecting two member from the fifteen members is mathematically represented as

Here C stands for combination hence we will be making use of the combination functionality in our calculator

=> 
=> 
Gnerally the number of outcome that matches the outcome required by the committee(Which is reselecting the member who where the chairman and vice chairman of the board ) is m = 1
Generally the probability of randomly selecting the two members who currently hold the positions of chairman and vice chairman and assigning them to their current positions is mathematically represented as

=> 
=>
=>
Take the equation and distribute the 16 on the right:
64x - 16 = 16(4x - 1)
64x - 16 = 64x - 16
Since what is on both sides is identical, you'll always get a true statement no matter what value you pick for x.
This equation has infinitely many solutions.
(0,4) is the y intercept
Hope this helps :)
Answer:
x = 0 or 1/2
Step-by-step explanation:
Solving an exponential equation of this nature with different bases and coefficients is always a bit of an ad hoc affair. Here, we can divide by the right side expression and make a substitution that turns it into a quadratic.
__

_____
<em>Additional comment</em>
A graphing calculator often solves these very nicely, especially when the equation is put into the form f(x) = 0.