Answer:

Step-by-step explanation:
First, we need to write the polynomial in descending order
Then, grab the term with the highest power from the polynomial and divide it by the term with highest power from the polynomial located at the other side of the division symbol (this polynomial would be x+5)
The result (4x^2 / x) = 4x
This term will be part of the solution, and will be use to start the process of division.
This process start with the previous obtained term (4x), which will be multiplied by the polynomial from the other side of the division symbol (x+5).
The result another is another polynomial
This new polynomial will be multiply by negative 1
The new polynomial is then added to the poly (4X^2+14x-9)
The result will constitute a new poly, that will be use as the remaining of the division.
Since, our remaining differs from zero, and we still have member to simplify, we repeat the step 1 using the remaining as the new poly that needs to by divided by (x+5).
The attached picture explains the whole procedure.
That day they will have 132 conversations. There are 12 members and each one will be calling the remaining 11 members of the club which means each one will make 11 calls and that will be done by 12 members so 11x12= 132 conversations in total
12 months= 1 year
Every month they make 132 calls so 132x12 will be 1,584 calls per year.
If the club decides to add four new members to the club the conversations each month will rise up to 240.
If the other club likes the idea they can use the following equation
(x-1)(x)
X represents the number of members of the group the subtraction of 1 is when a member makes a call not including them selves so there are 12 members but the one making the call isn't included so there are 11 calls being made then being multiplied by the total number of members.
(x-1)(x)
(12-1)(12)
11(12)
132
Answer:
x = 7
Step-by-step explanation:
( x +16)° = (4x - 5)°
x + 16 = 4x - x
16 + 5 = 4x - x
21 = 3x
7= x
hence, x =7