Answer:
The <em>x</em>-intercept would be at the point where there are 0 downloads in <em>x</em> days.
Step-by-step explanation:
The <em>x</em>-intercept of a function is the point where the graph of the function crosses the <em>x-</em>axis and the <em>y</em>-coordinate is 0.
That is, the point (<em>x</em>, 0) is the <em>x</em>-intercept of a function.
In this case the data provided is for the number of free downloads using the promo code (f (x), in tens of thousands) and the time since posting (<em>x</em> days).
So, in this case the <em>x</em>-intercept would be at the point where there are 0 downloads in <em>x</em> days.
The answer is B, C, and D. Like terms are terms with all the same variable, so 5x and -x are like terms.
C is correct. If we add -x to 5x, we get 4x. The other numbers remain unchanged because they have no like terms.
D is correct. Applying the rule of like terms, which is that like terms are numbers with the same variable, only add together numbers with the same variable.
Hope this helps!
The inverse of a function will also be a function if it is a One-to-One function. This means, if each y value is paired with exactly one x value then the inverse of a function will also be a function.
Option C gives us such a function, all x values are different and all y values are different. So inverse of function given in option C will result in a relation which will also be a function.
In all other options, y values are being repeated, which means they are not one to one functions.
So, the answer to this question is option C
3(2x+1)=2(x+1)+1
6x+3=2x+2+1
6x+3=2x+3
minus 2x
4x+3=3
minus 3
4x=0
divide by 4
x=0
her work is correct
her conclusion is wrong; there is one solution which is x=0
