Answer:

Step-by-step explanation:
→ Minus the z² terms

→ Minus the whole numbers

→ Add the z terms
11z
You can't answer this you have no actual information. You don't know how many assignments there are.
a/2 would be the only possible answer
Step-by-step explanation:
(-23) x 93 = - 2139
(- 16 ) x (- 30) = 480
14 x (- 12) = - 168
a) fraction notation 1/5 and percent notation is 20% or just 20
b) 1/5
(1/3)r + (2/3)r = -2 -1
1r = -3
r = -3
Hope this helps