Answer x=6
(x-6)^2=0 using a^2-2ab+b^2=(a-b)^2, factor the expression
x-6=0 the only was an exponetiation can be 0 is when the base equals 0
move the constant to the right hand side and change its sign
ANSWER X=6
Short answer:
TotalCost = 12.96
Long answer:
It gives you the equation of
total cost = C + 0.08C
You just need to plug-in the $12 to the equation.
In other words, the equation is:
TotalCost = 12 + 0.08*12
TotalCost = 12 + 0.96
TotalCost = 12.96
We don't know the amount they get but the equation would be Claire 5 + a