Answer:
3 students didn't vote for her
Step-by-step explanation:
Step 1: Make an expression
30 * 90% = s
[tex]30 * 0.9 = s[/tex]
Step 2: Multiply
[tex]30 * 0.9 = s[/tex]
[tex]27 = s[/tex]
So... 3 didn't vote for her
Answer: 3 students didn't vote for her