Answer:
y = 
Step-by-step explanation:
Given that y varies directly as x then the equation relating them is
y = kx ← k is the constant of variation
To find k use the condition y = 7 when x = 3
k =
=
, thus
y =
x ← equation of variation
When x = 7, then
y =
× 7 = 
Practically anything above -8
Such as -7, 2, 15600, anything not under -7.9
The answer is square
Hope it helps
You would have to divide 37.2 by 10. The answer would be 3.72.