Answer:
-13.50
Step-by-step explanation:
2.50 x -4 = -10
-3.50 + -10 = <u>-13.50</u>
y=3/4x+2 is the answer
The sum you are trying to understand is this.
Remember that in general when you have a geometric series
you have that
and that equality is true as long as .
Therefore here we have
and
Therefore we can use the formula and