Jon and Lexi are playing a marble game. According to their rules, 4 points are awarded for each red marble collected and 3 points are awarded for each blue marble collected. Which expression represents Jon's total score if he has r red marbles and b blue marbles?
a.4r - 3b
b.2r - 3b
c.4r + 3b
d.7rb
answer: 2r- 3b am I right

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@Hero

Why do you believe that's the correct answer? Can you explain?

I kinda guess

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