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Misha Larkins [42]
3 years ago
9

Can you please solve and explain how. I dont have any idea :(

Mathematics
1 answer:
mezya [45]3 years ago
4 0

From the expression 2f + 5(8-f), we know that Karla caught f purple dot fish, and (8-f) green dot fish, because green dot fish gives 5 points.

2f -points for the purple dot fish, f is a number of the purple dot fish.

5(8-f) - points for the green dot fish, (8-f) is a number of the green dot fish.

So,

altogether she made 8 attempts.

One attempt cost 50 cents,

8 attempts cost 8*50=400 cents = $ 4.

Answer is B. 4 (dollars).

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