Answer:
the answer is 20 liters
Step-by-step explanation:
From the graph ⇒ f(-4) = -8
⇒ f(x) = 2x
x = 11/5
-3 + 5x = 8
5x = 8 + 3
5x = 11
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5 x 3 = 15 / 4 x 8 = 32 / 6 x 1.5 = 9