Answer:

Step-by-step explanation:
<h3>Definition(s):</h3>
1. <em>Circumference</em>
The outer boundary, especially of a circular area; <em>perimeter</em>.
2. <em>Radius</em>
A straight line extending from the center of a circle or sphere to the <em>circumference</em> or <em>surface</em>.
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<h2>solution</h2>
The circumference of a circle can be obtained by using the equation below:

where the mathematical constant,
, has a value of approximately 3.14 and
represents the radius of the circle.
All we have to do is multiply the given radius by two and multiply that value by
to determine C:



X= -2/5 + y/5 solve for x by simplying both sides of the equation, then isolating the variable
Answer:
C
Step-by-step explanation:
44/70 which is about 0.063 Hope this helps :D Please mark brainliest
a. 60(h)+40=
b 60(3)+40=
180+40=$220
c. 400=60(h)+40=
360=60(h) *divide 60 on each side*
6=h, 6 hours