Tammy will donate up to

Question

$480
to charity. The money will be divided between two charities: the City Youth Fund and the Educational Growth Foundation. Tammy would like to donate at least
$140
dollars to the Educational Growth Foundation. She would also like the amount donated to the Educational Growth Foundation to be at least twice the amount donated to the City Youth Fund. Let
x
denote the amount of money (in dollars) donated to the City Youth Fund. Let
y
denote the amount of money (in dollars) donated to the Educational Growth Foundation. Shade the region corresponding to all values of
x
and
y
that satisfy these requirements.