**Answer:**

This is not a right triangle(No)

**Step-by-step explanation:**

**Vertex****<em> </em>**is at

<em>y-intercept</em> is **3**.

The parabola <em>**opens up**</em>.

**Step-by-step explanation:**

The graph of the equation is hereby attached in the answer area.

Vertex is the point on the parabola where the graph **crosses its axis of symmetry**. The axis of symmetry here(), is shown with the dotted line in the graph attached.

<em>y-intercept </em>is defined as the value of y where the graph **crosses **the **y-axis**. In other words, when . Putting

And, the graph opens up as shown the graph figure as well. It is also evident from the co-efficient of in the given equation . Here, co-efficient of

So, **vertex**<em> </em>is at

<em>y-intercept</em> is **3**.

The parabola <em>**opens up**</em>.

**Answer:**

C. 184 ft²

**Step-by-Step Explanation:**

The formula for the surface area of a triangular prism is

**SA = bh + 2ls + lb**; where b = base, h = height, l = length, s = side

First, substitute the known value into the equation:

b = 6 ft

h = 4 ft

l = 10 ft

s = 5 ft

SA = (6)(4) + 2(10)(5) + (10)(6)

Then, all we have to do is simplify:

SA = 24 + 2(50) + 60

SA = 24 + 100 + 60

**SA = 184 ft²**

**Hope this helps!**

Collect like terms

-3w - 7 w =5

Divide both sides by -10

-10w =5

w = -1/2