The directrix of a parabola is y=4. its focus is (2,6). what is the standard form of the parabola?

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

What will be the end result for the taxpayer who filed his federal income tax return using the 1040ez form shown belowa he'll owe $173b he'll receive a refund of $173c he'll owe $3921d he'll receive a refund of $3921