Answer:
Part a) The volume of the air is 
Part b) The volume of the plastic is 
Step-by-step explanation:
we know that
The volume of the sphere is equal to

step 1
Find the volume of the complete ball (air +plastic)
we have
------> the radius is half the diameter
substitute


step 2
Find the volume of the air
we have that
The plastic is 2 mm thick
Convert to cm
2 mm=2/10=0.2 cm
so
The radius of the interior of the ball is

substitute

-----> this is the volume of the air (interior of the ball)
step 3
Find the volume of the plastic
we know that
The volume of the plastic is equal to the volume of the complete ball minus the volume of the air
so

Well the equation of this line is
. Which means that for any value of y the x will always equal to 3/5, so the points (ordered pairs) for eg. are
.
Hope this helps.
Hello Dafnemlp47vj7
The inequality for one week would be <u><em>13 = 2c + 3 </em></u>
Step-by-step explanation:
this the answer.............. ...........