Answer:
4.8ft
Step-by-step explanation:
Let x be the length of the side of the hot tub. Ricardo wants the pool's sides to be 5 times as long, so
5x=24\implies x=\dfrac{24}5=4.8\text{ ft}
Another way to solve this is to use the Midpoint Formula. The midpoint of a segment joining points

and

is

So the midpoint of your segment is

Perhaps it helps to see that the x-coordinate of the midpoint is just the average of the x-coordinates of the points. Ditto for the y-coordinate of the midpoint; just average the y's.
You just add all the numbers together:
3 1/8+ 4 1/2+ 4 1/4
=25/8+9/2+17/4
=25/8+36/8+34/8
=95/8
=11 7/8
Ugh.. did you type in the numbers correctly? My guess would be it was meant to be B tho :)
Answer:
y+4=-2(x-4)
Step-by-step explanation:
y-y1=m(x-x1)
y-(-4)=-2(x-4)
y+4=-2(x-4)