Write a real world situation that could be modeled by the expression “x - 12”

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

What is the value of f(x) = 2.2 for f(-2)?

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”?