3( 3t^2 - 6u + 7) hope this helps
See I would love to help but need the last part of the question. At what point?
Answer:
The surface area of the prism is 
Step-by-step explanation:
we know that
The surface area of the triangular prism is equal to

where
B is the area of the triangular face
P is the perimeter of the triangular face
L is the length of the triangular prism
<em>Find the area of the triangular face B</em>

<em>Find the perimeter of the triangular face P</em>

we have

substitute the values

The area of the entire sector is 
The area of the triangle OAB is
.
So, the area of the segment is 
Ronnie's purchase is not an example of impulsive buying because he had an intention to buy electronic device
<h3>Impulsive Buying</h3>
<h3>What is Impulsive Buying</h3>
Impulsive buying is simply a situation buyers are faced with when they purchase items they do not really need or no intention prior to the time of purchase.
However, in this situation Ronnie purchase is not an example of impulsive buying because he had intention to purchase an electronic device, hence he walked into and electronic store.
Learn more about impulsive buying here:
brainly.com/question/24260