4). Evaluate these expressions for:
a = +2, b = -3, c = +8 Write out the expression with numbers first. Circle 2 signs together and replace with 1 sign, then solve:

a). a + b =	b). a - b=
c). b - c =	d). 3a - b =
e). a + 2b =	f). c - a - b =

5). Evaluate these expressions for:
m = +4, p = - 2, t = +8
Write out the expression with numbers first. Circle 2 signs together and replace with 1 sign, then solve:

a). mp =	b). (t - m)p =
c). t(pm) =	d). 2p(t + m) =

6). Evaluate these expressions for:
x = 1/3, y = 1/2, z = 1/4
Write out the expression with numbers first.

a). xy =	b). x y z =
c). 3x - y =	d). x(z + y) =