Question #ad6a9
3 Answers
Explanation:
"to evaluate "W(-8)" substitute x = - 8 into "W(x)
rArrW(color(red)(-8))=(4xxcolor(red)(-8))+5
color(white)(xxxxxxxx)=-32+5=-27
Explanation:
Have a look at https://socratic.org/help/symbols Particularly note the hash at the beginning and end of the entered 'maths bit' This initiates and ends maths formatting. Example: hash 2x xx3 hash gives
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The W is just a name that that is assigned to the structure of the expression
So every time you see W (for this question) you know they are talking about the structure
So
Set
Explanation: