f(x) = x+.50(x)
where x is the amount the math club raises and
.5x is the amount the principal donates
f(x) is the amount of money for the field trip
we can simplify this to
f(x) = 1.5x by combining like terms
using the original equation
f(150) = 150 + .5(150)
f(150) = 150 +75
f(150) =225
using the simplified equation
f(150) = 1.5(150)
f(150) =225
