Answer:
I just did it its 1/3n - 5
Step-by-step explanation:
Let x represent the number of students in Janelle’s group.
If Janelle brings 3 markers for each person in her group, then she brings 3x markers for x students. You also know that she brings <span>5 extra markers for everyone to share. Thus, the total amount of markers she brings is 3x+5.
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If Janelle brings in 23 markers in all, then the equation <span><span>3x+5=23 </span> represaents the mathematical model. </span>
3x=23-5,3x=18,x=6
Answer: there are 6 students in Janelle's group.
F(4-x)=12
Domain:(-oo,oo) these are infinity symbols by the way.
(2a+2)(4a+4)
8a^2+8a+8a+8
The answer is 8a^2+16a+8