3). Evaluate these expressions for
d = 5
e = - 3
f = 9

a). d f =

b). e + d =

c). e + f =

d). 3 d - f =

e). 5 d f =

4). Evaluate these expressions for:

a = 1/2
b = 1/8
c = 1/3

a). a + b = ______

b). a c = ______

c). 8 b = ______

d). a b = ______

e). a b c = ______

f). 3 c + 2 a = ______

g). a + 4 b =