5th of a number minus 1/4 of it =7

5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

20 only answer if 100% sure most high school-aged teens are very active. a. true b. false