Step-by-step explanation:
2/7
2×2 = 4
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7×2 = 14
2×3 = 6
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7×3 = 21
2×4 = 8
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7×4 = 12
** Calculation is based on 52 weeks per year.

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The answer is 10.4 because 5 is counted as higher so it's 10.4.
Since the second equation gives a value for a, we can substitute it into the other equation to find a value for B.
Let's substitute b-2 into the first equation wherever there is an a.
a - 3b = 4
(b-2) - 3b = 4
b - 2 - 3b = 4
-2 - 2b = 4
-2b = 6
b = -3
Now let's find a by substituting -3 into either of the equations to find the value of a.
a = b - 2
a = -3 - 2
a = -5
So your solution set is (-5, -3)