Answer is C and E.
All of the other ones don't follow order of operations properly.
Mono means one..but monomial can also a negative. Mono meaning one means there is a single variable.
of the quotient of the rectangular prism of green green and green green yellow green eeewww
Answer:
x + 3
Step-by-step explanation:
A 'sum' means addition, 'a number' is represented by a variable, in this case, I chose 'x'. I could have picked any variable I wanted.
The sum of three and a number means: three plus some number, which is
3 + x in math language. We write variables before constants, so it gets
rewritten as x + 3
(7b-9)(7b+9)
explanation:
I learned in math last year
