Business
How Inflation Affects Interest Rates: Fed vs. Bond Markets
When inflation tops the 2% goal, the Fed can raise its federal funds range; prime and card APRs follow. Mortgages track the 10-year Treasury instead.
How it works
Tech
Wi-Fi Calling vs. Cell Calls: Same Number, Different Route
Wi-Fi calling is still a carrier phone call on your own number. How it differs from cell and app calls on billing, data, 911 location and calls from abroad.
Business
How the CPI Becomes the Inflation Rate: The 3.7% Worked Out
Inflation is the percent change between two CPI index values. See BLS's September 2026 numbers worked into 3.7%, and why the 0.6% monthly figure differs.
Tech
Why Your Phone Says SOS and Can Still Call 911
SOS or Emergency calls only means the phone lost its own carrier's network. An FCC rule makes other carriers' towers carry 911 calls anyway.
Business
How Credit Card Interest Is Calculated: The Daily Rate Math
Card interest is charged daily: APR ÷ 365 × your average daily balance. A worked $1,000 example, plus how the grace period keeps it at zero.