The sum of Bobbi’s and Dan’s heights is 130 inches. Dan’s height subtracted from 3 times Bobbi’s height is 118 inches. What are Bobbi’s and Dan’s heights in inches?

Write the following as a base and exponent

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

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”?