The ages of students in a school are normally distributed with a mean of 15 years and a standard deviation of 2 years. approximately what percent of the students are between 14 and 18 years old?
a. 24.17%
b. 62.47%
c. 30.85%
d. 93.32%

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Write the equation in logarithmic form m^x=n

Solve for x where 0 equation: cot^2x+2cotx+1=0