Let the number be x.
7x-x=42
6x=42
x=7
the number is 7
Answer:

Step-by-step explanation:
The given function is
Let

Interchange x and y.

Solve for y,

Divide both sides by 2

Therefore;

Answer:
2/5 or 0.4
Step-by-step explanation:
:)
The answer is either A or D, B and C are off the table because the two shapes need to be graphed for those to be relevant. The answer you get should be A I believe.