Solution:

Pie

Explanation:
This is the bar graph that represents the number (3, 1, 4, 1, 5, 9, 2, 6, 5).
and we know the value of pie is 3.14159265

Solution:

Absolute(Maths Symbol) + lee + Not(0)
= Absolutely Not

Solution:

For(4) + a + change(delta/change symbol)
= For a change

Solution:

Route(Root symbol) + 66
= Route66

Solution:

Quadratic

Explanation:

quad(4 wheeler)
+ rat
+ i (eye)
+ C

Solution:

ground + floor(Symbol)
= ground floor

Solution:

glass + ceiling(Symbol)
= glass ceiling