How do groundwater erosion and deposition produce a limestone cave?

Combine like terms. do not forget to use the distributive property to simplify the first term. 2(3y + 5k) - 2k

Alaina wants to decide whether her current cell phone plan is better than a package that another company offers. to compare the two plans, she plotted two lines on a graph, where y represented the total cost of one month’s service and x represented the megabytes of data that she used in a month. which part of the graph will represent the cost per megabyte of data used in each plan?

South america is located within which hemisphere?