Question 1049136
#3
Just substitute the given values and evaluate the expression.


#2 and #1
PEMDAS  Order of operations




Look inside parentheses first.  Do the exponentiations:
Actually, I would make use of the indicated rational stuff there and simplify first.
{{{(((2*2*3*3)^4)/(3^2))/12}}}


{{{((2^4*3^4)/(3^2))/12}}}


{{{(2^4)(3^2)/12}}}


{{{(2^4*3^2)/(2^2*3)}}}


{{{2^2*3}}}


{{{highlight(12)}}}-----------result for #2.



#1
Multiplications from left to right:  {{{5*4/2+8}}}
{{{20/2+8}}}
Divisions from left to right, only one of them:  {{{10+8}}}
ADDITIONS from left to right:  {{{highlight(18)}}}



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WHAT ABOUT #4, #5, #6?


#4
Substitute the GIVEN values for x and y.  EVALUATE the expression.  Not much different than #3; same idea, similar method.


#5
You have the formula.  Substitute the values and evaluate.  The units will give no complications.


#6
Is {{{6=2*7-8}}} true or false?