1. 3. can also be expressed as (22/7)
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using the linear regression models , it is found that company a pays about $14 more. but using the same regression (linear) company b pays about $10 more.
so company a pays more than b
unless you made a typo, the answers are both a and c.
1.5/3 is .5 whereas 3/9 is .3333333 not proportional
22/33 is .66666 and 4/6 is also .66666 proportional
2/4 is .5 whereas 142/213 is .66666 not proportional
14/7 is 2 and 7/3.5 is also 2 proportional
you could've also checked it by doing this simple division:
if the larger fraction divides with the smaller fraction to equal 1, it is proportional. so let me show you what i mean:
when i divide 22/33 by 4/6 i get 1, so we know it is proportional, and it is the same with 14/7 and 7/3.5. now if i divide 3/9 by 1.5/3 i get .66666 so therefore we know it is not proportional.
there are many ways to do this so i wanted to show you some possible ways.