I’m my opinion I thick it could be A
Answer is D.
28:44 is the ratio but you have to simplify it. Divide both by 4. 28 divided by 4 = 7; 44 divided by 4 = 11
150 x 5= 750
20 x 5= 100 ... so they should expect 100 cellphones to be defective
Answer :
F-1(x)=-x/4-7/4
This is right
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