I think it is the first one: Different bar widths.
√30 = 5.47722557505
so 5.5ft × 5.5ft ≈ 30ft²
I hope I helped
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Answer:
x | -7 -5 -3
y | -21 -15 -9
Step-by-step explanation:
y = 3x
If x = -7 then y = 3 × (-7) = -21
x = -5 then y = 3 × (-5) = -15
x = -3 then y = 3 × (-3) = -9
75 minus 68 equal 7 80 minus 71 equal 9. 7 plus 9 equal 16 boxes