4x+y = 20
3x+y = 2
4x+y-3x-y = 20-2
x = 18
3x+y = 2
3.18 + y = 2
54 + y = 2
y = -52
Hello,
I suppose the function is y=3√(6x+42)
==>6x+42>=0 (it must be a square root of a positive)
==>6x>=-42
==>x>=-42/6
==>x>=-7
ANSWER D
Given

Distribute 9 on the left hand side and 5 on the right hand side (distributive property of addition)

Add 36 to both sides (addition property of equality)

Subtract 15h to both sides (subtraction property of equality)

Divide both sides by -6 (division property of equality)

Answer:
4,200
Step-by-step explanation:
(6x10^4) x 0.07
(6x10000) x 0.07
60000 x 0.07
= 4200