In both types of reactions, new substances are formed and there are changes in energy. However, endothermic reactions absorb energy, whereas exothermic reactions release energy. Reteach Change the boldface sentences into questions, and call on students to answer them.
The average monthly cell phone bill has soared in recent years to well over $100. A study earlier this year found that Verizon (VZ) was the most expensive carrier, with an average customer bill of $148 a month. Sprint (S) and AT&T (T) weren't that far behind, and T-Mobile (TMUS) was the least expensive of the Big Four carriers at $120.
As we've become more accustomed to having phone availability 24/7, the average cost of telephone bills has continued to rise. In many cases, the average household is now paying for a landline phone, in addition to one or more cell phones. Find out here how to get better phone bill rates. 1  slide 1 of 4. The Cost of Landline Phones Some people have begun to question whether they really need a landline phone. 2  slide 2 of 4. The Cost of Cell Phones The average cost of telephone bill for cell phones can get even more expensive. 3  slide 3 of  4.