Question

1. what is the variable in the equation $z = 3d + 2c$?

a. z
b. all of the available answers
c. d
d. c

Explanation:

Step1: Define variables

Variables are symbols representing unknown quantities.

Step2: Identify variables in equation

In \(z = 3d + 2c\), \(z\), \(d\), and \(c\) are all variables.

Step3: Match with options

Options a (z), c (d), d (c) are all variables, so "All of the available answers" is correct.

Answer:

b. All of the available answers