6.25 because 2.5+2.5= 5 and then half of 2.5 is 1.25 so 6.25
(b)
A polynomial has the form

± 
+ ....
the only expression fitting this description is : x² + 2x + 7
Supplementary angles add up to 180 degrees.
so if one angle is 60 degrees, then the other angle is (180 - 60) = 120
Answer:
i say maybe c
Step-by-step explanation: