Answer: b. $3.00
Explanation:
We have a linear relation here.
We know that we have 10 more unitos of the resource Q, so we need to add 10 times the value of Q.
The programmer notices that the increase is whort of $30, so ten times Q is equal to $30.
10*Q = $30
Q = $30/10 = $3
the correct option is b