Ineed to know why the answer is 12.5 and how you got it.

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol