Answer: D. Subtracting 9 from each side
Step-by-step explanation:
Always start with numbers without variables first before doing anything with x. And make sure one side must not equal 0 unless you're doing polynomials.
Answer:

Step-by-step explanation:
Isolate x on one side of the equation.
x+11-11=3-11 (Subtract 11 from both sides.)
3-11 (Solve & Simplify.)
3-11=-8
X=-8

So, the correct answer is x=-8.
Hi there!
In order to factor, start by knowing the variables for each term in the equation ax^2+bx+c
A=1
B=-5
C=4
(Based on the given equation)
In order to factor, we need to find two numbers that add to the b term (-5) but multiply to the c term (4)
-4*-1=4
-4+-1=-5
Therefore, the factored form would be y=(x-4)(x-1)
Hope this helps!
<em>Data</em>
• Morning: 156 times
,
• Lunch: x times
,
• Afternoon: 201 times
,
• Whole day: 562 times
<em>Procedure</em>
To know how many times did it ring at lunch, we have to build a relation, in which we know that the addition of the times in the morning, lunch, and afternoon equal the times it rang the whole day:

Then, we have to solve for <em>x </em>considering that it represents the times it rang during the lunch.



Answer: It rang 205 times during the afternoon.