It factorises to -
4(x+6)
The answer is;
Flame test is a qualitative test".
Flame test is performed for detecting metals in a compound and metals are detected by the color of the flame, and flame color identifies that which metal is this. so this is a qualitative test, different types of metals shows different color of flames.
40$. 7hrs
X$. 1hr
X=40•1/7
X~5.71 $ per hour
