Write the equivalent c++ expression for the following algebraic expressions
(1) 2ab+2bc+2ca

2a

The average cost of one year at a private college in 2012-2013 is $43,289. the average grant aid received by a student at a private college in 2012-2013 is $15,680.   what is the average student contribution for one year at a private college in 2012-2013?

How would you categorize the software that runs on mobile devices? break down these apps into at least three basic categories and give an example of each.

What is one reason why indoor air pollution has become an increasing problem.