We have that Juan school lunch for $3.15,Expressed as fx. is
F(x)=x*30(or days of the month)
Where
X= Price for school lunch
From the question we are told
Juan purchases school lunch for $3.15.
Express his monthly cost as fx.
Generally the equation for the monthly school lunch fee is mathematically
given as
x=\$3.15
Therefore
Mx=3.15*30
Mx=94.5
Therefore
His monthly cost as fx is
F(x)=x*30
Where
X= Price for school lunch
In conclusion
Juan school lunch for $3.15,Expressed as fx. is
F(x)=x*30(or days of the month)
Where
X= Price for school lunch
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