X² (x+4) can you show me how to answer this question?

Describe how fraction strips can you order fractions

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x