Substitution is where you solve for one of the variables and then plug that in for the same variable in the other equation. Here, there is already an equation that is solved for a variable,
![\sf y=4x-11](https://tex.z-dn.net/?f=%5Csf%20y%3D4x-11)
. So we can plug in '4x - 11' for 'y' in the other equation:
![\sf 3x+5y=-9](https://tex.z-dn.net/?f=%5Csf%203x%2B5y%3D-9)
![\sf 3x+5(4x-11)=-9](https://tex.z-dn.net/?f=%5Csf%203x%2B5%284x-11%29%3D-9)
Distribute 5 into the parenthesis(multiply it to every term in the parenthesis):
![\boxed{\sf 3x+20x-55=-9}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Csf%203x%2B20x-55%3D-9%7D)
Your answer is
C.
To get a 40% percent increase you need take 700 and multiply it by 1.4 (or 140%) and that should give you 980
Answer:
3
Step-by-step explanation:
Coefficient simply mean the multiplier of any alphabet or symbol or variable in a mathematical equation.
Therefore from the expression 3n-4, 3 is the multiple of n.
This simply implies that 3 is the coefficient of n.