Answer:
![a^2 - b^2](https://tex.z-dn.net/?f=a%5E2%20-%20b%5E2)
Step-by-step explanation:
1. ![(a)(a)+(a)(b)+(-b)(a)+(-b)(b)](https://tex.z-dn.net/?f=%28a%29%28a%29%2B%28a%29%28b%29%2B%28-b%29%28a%29%2B%28-b%29%28b%29)
2. ![a^2 + ab - ab - b^2](https://tex.z-dn.net/?f=a%5E2%20%2B%20ab%20-%20ab%20-%20b%5E2)
3. ![a^2 - b^2](https://tex.z-dn.net/?f=a%5E2%20-%20b%5E2)
Answer:
you can buy 5lb of wings for $30 and 3lb of shrimp for $30 too
Step-by-step explanation:I forgot what a linear equation was sorry :/
Answer:
Wilma has $12.
Step-by-step explanation:
Since we don't know how many hours she worked, we know that Wilma earned 9x dollars at her job. Then she spends $15, so we can just subtract 15 from 9x.
![9x-15](https://tex.z-dn.net/?f=9x-15)
We can just replace the x with 3 to get:
![27-15\\12](https://tex.z-dn.net/?f=27-15%5C%5C12)
Hence, Wilma has $12.
Answer:
$4440
Step-by-step explanation:
From the question, the annual cost of the plan is $14800
The employer pays 70% 0f the cost.
⇒70/100 ×14800 =$10360
Remaining amount to pay=
14800-10360=$4440