**Answer:**

**Step-by-step explanation:**

9 = −1 + 4a

**+**** ****1**** **** **** ****+**** ****1**

**_________**

I am joyous to assist you anytime.

**Answer:**

y=96

**Step-by-step explanation:**

**Important information:**

y=x^2(2+4)

x=4

**Explanation/Solution:**

y=x^2(2+4)

y=4^2(2+4)

y=16 (2+4)

y= 16 · 6 =

y=96

**Answer:**

8u + 3

**Step-by-step explanation:**

the 6u and 2u are like terms, so they can be added. the 3 must stay on its own though, as it does not have a u in front of it:)

**Answer:**

The two right sided polygons.

**Step-by-step explanation:**

the first polygon can be split by only x-axis, while last polygon can be split by all aces