Some cell phone providers are now offering hardware, like small laptops, and media to play on it, like songs and tv shows. phone companies believe that each product they offer will encourage and promote other products, as phones can easily send data to laptops, which can store media that can easily be watched on phones, and so on. what is this called?

You are the manager of a large crude-oil refinery. as part of the refining process, a certain heat exchanger (operated at high temperatures and with abrasive material flowing through it) must be replaced every year. the replacement and downtime cost in the first year is $165 comma 000. this cost is expected to increase due to inflation at a rate of 7% per year for six years (i. e. until the eoy 7), at which time this particular heat exchanger will no longer be needed. if the company's cost of capital is 15% per year, how much could you afford to spend for a higher quality heat exchanger so that these annual replacement and downtime costs could be eliminated?