The answer is D because it asked 7 or more
Um, I think it's:
(x) + (x+6) = 42
An algebraic EXPRESSION will not have an equal sign so it will not be letter a or b.
Since it's algebraic it will have numbers, VARIABLES, and symbols. Letter C
Use decimals like 6.5 + 6.5= 13
I think Sasha's number increased by a fixed number and Mona's increased in a fixed number (by the way my mom's name is mona)