x^2+6x+8 factored is (x+4)(x+2)
In 7500 iPhones, 18 were found defective.
18 of 7500 is 0.24%
0.24% of iPhones were defective.
Using the information above:
In a sample of 60000 new iPhones, 144 would be found defective.
144 of 60000 is 0.24%
Answer: 144 defective iPhones would be expected in a sample of 60,000.
Hope this helps! Good luck. :-)
Answer:
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Step-by-step explanation:
The contestants total number of points is 20.
30 + 15 = 45
45 - 25 = 20 total points