R17 is greater than or equal to 545.7

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

Find the root(s) of f (x) = (x- 6)2(x + 2)2.

Marcos works the summer while in college and earns $6,000 working on oil rigs. he files his own return, does not take the personal exemption but claims the standard deduction. how much would he pay in income tax?