Answer: 34%.
By definition of normal distribution, ≈68% of the data is within 1 standard deviation of the mean. Therefore 68% of IQs are between 85 and 115, and half of that is on the lower end, 85 to 100.
If you would like to solve 7x - (25x^2 + 12x), you can do this using the following steps:
7x - (25x^2 + 12x<span>) = 7x - 25x^2 - 12x = - 25x^2 - 5x
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The correct result would be <span>- 25x^2 - 5x.</span>
$108
Step-by-step explanation:
If 48 hats costs $192;
Then 1 hats would cost $4.
So therefore 27 hats would cost $108 i.e. 27 times $4
