C = 1.39 + 0.5(n - 1), where C is the cost and n is the number of days
C = 1.39 + 0.5(6)
C = $4.39
<span>The question is asking us to "find the missing number ___:7 = 12:21
First, let's see how similar are 7 and 21 - 21 is 7 multiplied by 3. So the gap will be filled in by something that multiplied by 3 will give us 12. So we have : x*3=12, and also: x=12/4=4, so the answer is
C.4</span>
Answer:

Step-by-step explanation:
Given expression:

Substitute

into the expression:

Answer:
the upper left Quadrant is Quadrant II