because its isosceles so 9+9=x²
and x equal
2√3
4x-9y=2 this is the answer
I can’t see anything but a black paper
Just do what you said (subsitute) and solve
x=number of classes
7.5x=5.5x+10
subtract 5.5x from both sides
2x=10
divide 2
x=5
5 classes
to find how much it costs, subsitute 5 for x in any equation
y=7.5(5)
y=37.5
total cost is $37.5 per month
