Question

2. Let z represent the unknown number. Write expressions for:

a. A third of the unknown number plus three
b. Four times the unknown number less twice the number
C. The sum of the unknown number and its square
d. The fraction obtained when double the unknown number is divided by the sum of the unknown number and four​

Answer 1

a. z+3

b. 2z - 4z

c. z + z^2

d. 2z/(z+4)

Hope it helped.