What is 1k+3=5k-3 algebra

What is the difference between the number of adult dogs at the park on monday and tuesday

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”?

Collin did the work to see if 10 is a solution to the equation r/4=2.4