Jon and lexi are playing a marble game. according to their rules, 4 points are awarded for each red marble collected and 7 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?

1. 4r − 7b
2. 2r − 7b
3. 11rb
4. 4r + 7b

Option 4 is correct

4r + 7b

Step-by-step explanation:

Here, r represents the red marbles and b represents the blue marbles.

As per the statement:

Jon and Lexi are playing a marble game.

According to their rules,

4 points are awarded for each red marble collected and 7 points are awarded for each blue marble collected.

4 points are awarded for each red marble collected

⇒Total number of red marbles collected =  4r

7 points are awarded for each blue marble collected.

⇒Total number of blue marbles collected = 7b

We have to find the  expression represents Jon's total score.

John's Total score = 4r + 7b

Therefore, 4r+7b is the  expression represents Jon's total score if he has r red marbles and b blue marbles

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