Allyanna has a cell phone plan that costs 150$ to start. Then there is a $45 charge per month. What is the linear equation we co
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Answer:
(a)
(b) The graph is shown below.
(c) Seiji earned $ 210 and Gavin earned $ 240.
Step-by-step explanation:
Given:
Sum of earnings of Seiji and Gavin = $ 450
Gavin earns $ 30 more that that of Seiji.
(a)
So, as per question, if s and g are the amounts earned by Seiji and Gavin respectively, then;
(b)
The graph is plotted using the x and y intercepts of each line.
For the line, , the x intercept is at
. So, x intercept is (450,0). Similarly, the y intercept is when s=0, which is (0,450). Draw a line passing through these two points. The red line represents
.
We follow the same process to plot the next line. The x intercept is at (-30,0) and y intercept is at (0,30). Draw a line passing through these two points. The blue line represents .
The graph is shown below.
(c)
From the graph, the point of intersection of the two lines gives the earnings of each of the persons.
The value of the point of intersection is the earning of Seiji which is $ 210 and the
value is the earning of Gavin which is $ 240 as shown in the graph.
Therefore, Seiji earned $ 210 and Gavin earned $ 240.
Using logarithms property of log(x)+log(y)=log(xy)
so here, you can sum the equation to;
so you can simply say that;
and by multiplying (x+6)*(x-6)
and as you know also that;
is same as 
so you can simply state it as;
And you can check your work by substituting with 10 instead of x in the original function.
Hope this helps!
so here, you can sum the equation to;
so you can simply say that;
and by multiplying (x+6)*(x-6)
and as you know also that;
so you can simply state it as;
And you can check your work by substituting with 10 instead of x in the original function.
Hope this helps!