Evaluate the geometric series:
4- 20 + 100 – 500..., n= 6

Write and solve a real word problem that involves determining distance on a coordinate plane

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Campus rentals rents 2 and 3 bedrooms apartments for $700 ans $900 a month respectively. last month they had six vacant apartments and reported $4600 in lost rent. how many of each type of apartment were vacant?