1. A letter that represents an unknown number is called
a constant
c. term
b. variable
d. operation
2. Fely had 6 books. Then she went to a book sale and bought x more books.
What is the correct expression that shows the number of books Fely has
now?
a. X
b. 6 + x
CX-6
d. 6x
3. Joel has b red peppers and 67 green peppers. The expression that shows
the number of peppers Joel has is
a. b- 67
c. b + 67
b. 67b
d. 67-b

pls po​