Answer:
y= 3/2x -2
Step-by-step explanation:
make y be on one side by itself ( -2y = -3x + 4 )
divide by negative 2 in order to get y by itself ( -2y/-2 = -3/-2 + 4/-2 )
two negatives make a positive ( y = 3/2 + -2 )
0.13
0.13 is the correct answer
4 grams
Mass is conserved, so if you start with 4 grams, you end with 4 grams.