Answer:
It is not direct variation
Step-by-step explanation:
y/7 = 2/x
y = 7×2/x
y = 14/x
And
y = k/x
k = 14 which is the constant of proportionality
: y ∞ 1/x
This is inverse variation
In math terms this means x divided by 3=3 so x so x means 9 so the answer is nine
The answer is x=42.8+- (plus or minus) 12
So he should either have $30.80 or $44.80 left
Your answer will be congruent