Answer:
Girls in Mr. Chang's class: 28 - 21 ; # girl students = # total students - # boy students ; 7 girl students.
Boys in Mr. Chang's class: 28 - 7 ; # boy students = # total students - girl students ; 21 boy students.
The correct answer is 4 :-)
Answer:
16
Step-by-step explanation:
<u>Remember that
</u>
(-2i)(8i)


16