13. what interest rate is needed for $9,50
nterest rate is needed for $9,500 to earn $900 in
months? round to the nearest hundredth of a percent.

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?