Hi!

<em>Plug in </em>
for 

<em>Multiply </em>
<em>and </em>

<em>Add </em>
<em>and </em>

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Betty's percentage is 15%.
The rate of change is the amount it changes for every missing assignment, therefore it would be -5.
I just worked it out and I got 6 3/28
Im sorry if that's wrong
5 'parts' of the total company staff are men, and 8 'parts' are women.
That's 13 'parts' all together, comprising 364 people.
So each 'part' is 364/13 = 28 people.
Men = 5 'parts' = 5 x 28 = <u>140 men</u>
Women = 8 'parts' = 8 x 28 = <u>224 women</u>
<em><u>Check:</u></em>
140/224 = 70/112 = 35/56 =<em> </em><em>5/8</em>
140 + 224 = <em>364</em>
yay !