Elimination
x=-5 and y=-8
Step-by-step explanation:
-(5x-4y=7) <--- Multiply by a negative so that y can cancel out
4x-4y=12
=-5x+4y=-7
=-x=5
x=-5
5(-5)-4y=7 <--- plug x back in to solve for y
-25-4y=7
+25 +25
-4y/-4=32/-4
y=-8
a 10 percent increase
2^y = ln 5, or y(ln 2) = ln 5. solving for y, y = (ln 5) / (ln 2). y=5
step-by-step explanation: