(x+1)+(x+2)+(x+7)+...+(x+28)=155

What values of data might affect the statistical measures of spread and center

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.