Answer:
Question 8.) Choice d.) 4 + x + 6x = 4 + 7x
Question 9.) Choice b.) 18 - 15 + 4n + 5n simplifies to 9n + 3
Step-by-step explanation:
For the first question, like terms are terms that have the same variables, and not necessarily the same coefficient numbers.
first problem, x + y + xy all have unique terms. x is different from y and is different from xy
so it cannot be A.
Choice d. has like terms x and 6x so 4 + x + 6x can simplify to 4 + 7x
Choice b.) 18 - 15 + 4n + 5n simplifies to 9n + 3
