Posted by i dont understand! on .
i am thinking of a number. if you multiply it by 7, then add 15, and finally subtract 3^2 you get 48. write and solve an equation that describes the number (x) that i am thinking of.
how do i find it?
what is x?

MATH 
Trig,
Let x be the number.
You multiply that number by 7
SO FAR WE HAVE: 7x
You add 15 to that number
SO FAR WE HAVE: 7x+15
You subtract 3^2 (which is 9) from that number
SO FAR WE HAVE: 7x+159
When you do all of that to the number, you get 48
THE FINAL EQUATION IS: 7x+159=48
TO SOLVE:
7x+6=48
7x=42
x=6 
MATH 
i dont understand!,
kk thank you