By using proportions, We expect 150 defects out of the 10,000 cars if the 3 defects out of the 200 cars sampled is representative of all 10,000 cars.
Option A is correct.
First, let's set up the proportions.
A proportion is an equation in which two ratios are set equal to each other.
We have 3/200 cars with defects and we want to know X for X/10000.
So 3/200 = X/10000
Now solve for X.
3/200 = X/10000
X = 
X = 150
So the answer is: We expect 150 defects out of the 10,000 cars if the 3 defects out of the 200 cars sampled is representative of all 10,000 cars.
Option A is correct.
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the answer is c i used a algebra calculator
Well first you take 78 and turn it to 7.8
then multiply by 10000
therefore 7.8*10000= ?
Answer:

Step-by-step explanation:
<em>Hey there!</em>
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In most cases "the number" would be x.
So if the statement says 8 <u><em>"more than a number",</em></u>
It is saying 8 plus x or 8 + x.
<em>Hope this helps :)</em>