WILL MARK BRAINLIEST Lorinda has started to think about saving for retirement. She reads a recommendation that says she should at least 3/10 of her income because she is over 40 yrs old.
Lorinda makes $69,000 a year. How much should she save in one year according to this recommendation?

Answer! if you don’t mind, can you explain

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”?

Quadrilateral efgh was dilated with the origin as the center of dilation to create quadrilateral e'f'g'h'. the quadrilateral was dilated using a scale factor of 2.5. the lengths of the sides of quadrilateral efgh are given. what is the length of side f'g'?