Answer:
11. 
Step-by-step explanation:
Substitute
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The answer would be d , because you have to add how many of each fish to equal up to the sum of 420 . which is x y . so the first equation is x + y = 420 . then it says he bought 6 times as many parrotfish as he did angelfish so you would have to multiply x which represents angelfish by 6 . to get the second equation of y = 6x .
e^x=170
because you subtract like terms (or add, it depends) then simplify (im bad at explaining)
It’s 0.3 because that’s the answer
The answer is 3.1428 (very close to π actually lol)
