FR POINTS I HOPE YALL HAVE A NICE DAY :D Btw I will be giving MORE POINTS to day and I will be giving brainliest!!
each time there will be more and more points this one is worth 15!​

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

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”?

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)