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jenyasd209 [6]
3 years ago
6

Help Me!!

Mathematics
1 answer:
iogann1982 [59]3 years ago
6 0

check the picture below.


so we know Bethany's payrate, her slope is 11.75, namely $11.75/hr, for for every hour, she makes 11.75 bucks.


now, let's use those red-circled points, to get Grant's slope, and therefore his payrate,


\bf (\stackrel{x_1}{3}~,~\stackrel{y_1}{38.70})\qquad 
(\stackrel{x_2}{7}~,~\stackrel{y_2}{90.30})
\\\\\\
% slope  = m
slope =  m\implies 
\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{90.30-38.70}{7-3}\implies \cfrac{51.6}{4}\implies 12.9


low and behold, Grant makes 12.90 or 12.9 bucks every hour.


well, Bethany does 11.75 hmmm what's their difference?


12.90 - 11.75

1.15


so 12.90 is greater than 11.75 by 1.15, meaning, Grant makes 1.15 bucks more every hour than Bethany.

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