Answer:
80
Step-by-step explanation:
We let x be Ann's savings.
Betty saves 3 times as much as Ann.
This implies that Betty's savings in terms of x
Charles save 390 less than Ann.
This implies Charles savings
Betty saves 1330 more than Charles.
This implies that when we deduct Charles savings from Betty's we have to get 1330.
Mathematical equation for the problem:
Expand :
Subtract 390 from both sides.
Divide through by 2
Hence Charles saving is
Answer:
y = x+
Step-by-step explanation:
Okay, the first thing to do here is calculate something known as the "slope".
We know two points are ( 1 , 5 ) and ( − 2 , 3 )
The slope is represented by "m" in the standard form: y = mx+b
The slope is also known as the rise over the run, y2-y1/x2-x1 = =
=> the standard form: y = x+b
Now we have to use the slope, and resubstitute another point to get b
5 = (1) + b
<=> b= 5- =
So the equation that model the line is: y = x+