1. In this expression, which is the variable? 5 + y a. P
b. 5
d. +
с. у
2. What is the variable in the expression 16r - 3?
b. R
d. 3
a.
C. -
3. What is the variable in the expression y - 7?
Y b. -
d. Z
c. 7
4.
What are the variables in the expression 10z?
a. Y b. Z
d. +
c. 10
5. Evaluate the expression 4 + d when d = 100
a. 400
b. 104 c. 4
d. 1,004