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The radius of a circle is 21mm what’s the circles diameter

42

Step-by-step explanation:

Radius is half of the diameter.

21 x 2 = 42

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation:

i'm sorry mate, but i am not seeing any figures. i am unable to solve this for you.