Answer:
x= 36
(it is positive since 78 is larger than 42, everything else is correct)
Step-by-step explanation:
Going out on a limb here and guessing that the function is

Please correct me if this isn't the case.
Recall that

which converges for

.
It follows that

The scale of a drawing is the RATIO that all parts of an object are reduced or magnified by
4 1/3 x 3 x 1 ¼
12 ¾ x 3 x 1 1/4
Your lucky that I just had the question on a test and realized you didn't make it into fractions.
Answer: it is D
explanation: the higher the weight is the higher the cost is