Answer:
4
Step-by-step explanation:
Just plug in -9 to the equation
6(-9) + 9y = -18
-54 + 9y = -18 isolate 9y
54 - 54 + 9y = -18 + 54
9y = 36 isolate y
9y/9 = 36/9
y = 4
Let the melting point be x degree C.
-188-x= 32
-x=32+188
-x=220
x= -220
Hence, the melting point of fluorine is -220 degree C.
4 ounces x $8 per ounce = $32
16 ounces x $3 per ounce = $48
4 ounces + 16 ounces = 20 total ounces
$32 + $48 = $80 total cost
$80 / 20 ounces = $4 per ounce cost
Answer:
Domain: {x|-∞<x<∞}
Range: {y|-∞<y≤3}
Transformation: Reflection across x-axis, left 2, up 3, vertical stretch of 2
