Answer
a ) $3/8$
b ) $5/8$
c ) $3/8$
d ) $1/8$
e ) $1.8125$
Work Step by Step
a ) $3/8$ : $p (x<2.5, y <3)$ = $1/4 +1/8$ = $3/8$
b ) $5/8$ : $p (x<2.5)$ = $1/4 +1/8 + 1/4$ = $5/8$
c ) $3/8$ : $p (y<3)$ = $3/8$
d ) $1/8$ : $p(x>1.8, y > 4.7)$ = $1/8$
e ) $1.8125$ : $[1/4 + 1.5/8 + 1.5/4 + 2.5/4 +3/8]$ = $ 1.8125$