4 Use the system of equations shown. 3x + 4y = -9
9x + 2y = 3
a. Would you choose substitution or elimination to solve this system? Explain.
b. Solve the system using the method you chose in problem 4a. Show your work.

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )

to complete this square you have to rotate about the origin 270 degrees clockwise.

6.25 grams

step-by-step explanation: