Take the letter out and replace it with the number that has the exact letter like x-10.
We can employ a simple repeated decimal trick:
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Alternatively, we can compute the partial sum of the series.
As 
, the second term vanishes and we're left with 
. Notice that this is really just a more formal version of the earlier trick.
The answer is highlighted and I put the work for checking the answer at the bottom
Answer:
Ron got 3 additional toppings
Step-by-step explanation:
Lets call the amount of toppings that Ron got t. With this, we can set up the following equation:
8.95+0.65t=10.90
Subtract 8.95 from both sides:
0.65t=1.95
Divide both sides by 0.65:
t=3
Hope this helps!
