Answer:
i believe it's c. im not 100% sure though!
Step-by-step explanation:
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Tonis donation is 3 times longer (6 x 3 = 18)
Answer:
option D.
Step-by-step explanation:

let's take any point on the graph. let's say (2, 16)
and one point we know is (0, 0)

= 16($) / 2 (hrs)
= 8 $/ hrs
that is option D.
The answer in an expression is (8 + 4) x 3