find the measure of are ED

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

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”?