D. x - 9y + 4 = x + 4 + (-9y)
Answer: 25 hours
Step-by-step explanation:

8 screens
or

Replace;



Answer: x=-7
Step-by-step explanation: hope this help :)
<span>will be selected as president of the sports club (and) will also be elected editor of the school magazine
you can see the ( and ) it means intersect
so
</span><span> president of the sports club </span>∩ <span>editor of the school magazine
= .7 * .4 = .28</span>