Question

Which expression is equivalent to z+z+z+z+3?

A. 7z
B. 4z + 3
C. 3z +4
D. z3​

Answer 1

4z+3

Explanation:

multiply the z's giving four z's and we don't know the value of z so we can't add 3 to it

Answer 2

B (4z + 3) is the correct answer. This is because you collect like-terms (z in our case)