I believe they are: (2,8), (4,6), (1,7), and (3,5) I could be wrong, but I'm almost certain that's it. Hope that helps.

Just follow step by step. Follow PEMDAS (Parentheses, Exponents. Multiply/Divide, Add/Subtract)
C. 6.2g can be combined with -3/8y. This is because they both end in ‘y’.
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Define their percentage:
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Adam = 100%
Tapiwa = 100 + 5 = 105%
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Find their total percentage:
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100 + 105 = 205
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Find 1%
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205% = 697 liters
1% = 3.4 liters
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Find 100% (Adam):
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100% = 3.4 x 100
100% = 340 liters
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Find 105% (Tapiwa):
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105% = 3.4 x 105
105% = 357 liters
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Answer: Tapiwa = 357 liters and Adam = 340 liters.
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Answer:
9 is the right answer
Step-by-step explanation:
I. If c = - 4 and d = 10
then
= 
= 
= 9
Hope that help :D