In two or more complete sentences, describe how you could model the following sum on a number line. In your answer, make sure to include the result of adding these two numbers together.

-3.5 + 4/2

With number 11 ( show how you got the answer)

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Rationalize the denominator- 12x/√x-10