Solve the system x+y=0 −2x−y=8 *Answer should be in ( x , y ) form, will give 40 points *

(2,4) (-4,16)

Step-by-step explanation:

Subtract  2 x  from both sides of the equation.

y = 8 − 2 x

Substitute  8 − 2 x  for  y  into  x ^2 − y = 0  then solve for  x .

x = 2 , − 4

Substitute  2  for  x  into  x 2 − y = 0  then solve for  y .

y=4

Substitute  − 4  for  x  into  x 2 − y = 0  then solve for  y .

y=16

Equation form

x = 2 , y = 4

x = − 4 ,  y = 16

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*

the correct answer is you spend $55.78 more in a brand store that buy ing in a normal store.

step-by-step explanation:

brand = spend   $ 135.85 total

store = spend $80.07 total