Answer:
14
Step-by-step explanation:
2(5)+4(5)-9-7
10+20-16
14
<span>Each ticket costs $10. He bought "x" tickets. Ticket cost = 10*x
Each bag of popcorn costs $5.
He bought "y" bags of popcorn.
Popcorn cost = 5*y
Service fee: $3
Total cost = 10x + 5y + 3 <= $75 is the inequality.
10x + 5y <= 72
If x = 4,
then 40 + 5y <= 72
5y <= 32
y <= 6.4
So y = 6 bags of popcorn.</span>
Answer:
21 + 220i
Step-by-step explanation:
reminder that i² = - 1
(- 11 - 10i)²
= (- 11 - 10i)(- 11 - 10i) ← expand using FOIL
= 121 + 110I + 110I + 100I²
= 121 + 220I + 100(- 1)
= 121 + 220i - 100
= 21 + 220i
