Answer: 529 students
Step-by-step explanation:
To solve this, we will be using the formula for finding averages:
> (total sum of student weights) ÷ (total sum of students) = (average of student weights)
Plugging in the values that are given in the problem, you get:
> 16,293.2 ÷ x = 30.8
Where x is equal to the total sum of students. From here, it's a simple equation to isolate x, and find out what numerical value x is equal to. In case you are unsure how to do this, I've created a clear step by step process for how to do this (NOTE: The slash represents division, while the asterisk represents multiplication.):
> 16,293.2 / x = 30.8
> (16,293.2 / x) * x = (30.8) * x
> 16,293.2 = 30.8 * x
> (16,293.2) / 30.8 = (30.8 * x) / 30.8
> 529 = x
In total, there are 529 students in the school.
Answer:
The graph 1 will represent the equation.
Step-by-step explanation:
The given function is 
and the function will become 
after a reflection over the y-axis.
Since after reflection over the y-axis the x-values of the function will change in sign and there will be no change in y-value.
Now, for x = 0, then y = 0.
For, x = - 1, then y = 1 and
For, x = - 4, then y = 2.
Therefore, graph 1 will represent the equation. (Answer)
