50. Slope- -1
Y intercept- (0,7)
51. Slope- -1/3
Y intercept- (0,-3)
Answer:
The surface area is 
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
The surface area of a triangular prism is equal to

where
B is the area of the triangular base
P is the perimeter of the triangular face
H is the height of the prism
<em>Find the area of the base B</em>

<em>Find the perimeter of the base P</em>

we have

substitute the values
The surface area is

Easy and fast way to do it:
Go to google and type, " volume of a cone calculator" and type in the radius and height.
Answer:
boom
Step-by-step explanation:
5(6x+5)-2(4x-1) = 30x+25-8x+2 = 22x+27