4. Sam and Jane both solved this equation: 3(2x-5) = 4(x+3). Their work is below. Determine which student got the right answer and explain the error make by the other. (3 pts)
Sam Jane
3(2x-5) = 4(x+3) 3(2x-5) = 4(x+3)
6x -5 = 4x +3 6x – 15 = 4x + 12
2x = 8 2x = 27
x = 4 x = 13.5

5. Write a sentence that can be represented by this expression: 3x + 7

Question

4.	Sam and Jane both solved this equation:  3(2x-5) = 4(x+3).  Their work is below.  Determine which student got the right answer and explain the error make by the other. (3 pts)
Sam	Jane
3(2x-5) = 4(x+3)	3(2x-5) = 4(x+3)
6x -5 = 4x +3	6x – 15 = 4x + 12
2x = 8	2x = 27
x = 4	x = 13.5

5.	Write a sentence that can be represented by this expression:   3x + 7

anonymous · Answer

hold on fix it .

hartnn · Answer

sam did not distribute properly, 
3*-5 =-15
and not -5

hartnn · Answer

jane did it correctly

anonymous · Answer

|dw:1348808992671:dw|

anonymous · Answer

thats what the graph is supposed to look like not a bunch of numbers scrunched up

hartnn · Answer

i understood that in the beginning only.....

anonymous · Answer

ok

anonymous · Answer

5.	Write a sentence that can be represented by this expression:   3x + 7

hartnn · Answer

the error made by sam, was the he did not distribute correctly,
a(b+c) =ac+ac

hartnn · Answer

ok

hartnn · Answer

let the cost of one pen be x$
if u already have short of 7 $ then, to buy 3 pens u need (3x+7)$ more

hartnn · Answer

*if you are short of.....

anonymous · Answer

thank you hartnn your a life saver especially because i suck at math!

hartnn · Answer

welcome ^_^
with practice, u will be good at this