Answer:
(1)
Multiplying by 3 both sides of the equality you get that

3u is in the Span of the vectors
.
(2)
That's not true, consider the following counter example.

is a linear combination of
but is NOT a linear combination of 
Step-by-step explanation:
(1)
As the hint indicates, you know that

Then, if you multiply both sides of the equality by 3, you get that

And that's it. 3u is in the Span of the vectors 
(2)
That's not true, consider the following counter example.

is a linear combination of
but is NOT a linear combination of 
I believe that your answer would be A. y < -294
Answer:
i=7.6h, 60.8 inches (B)
Step-by-step explanation:
Answer:
72%
Step-by-step explanation:
18÷25=0.72
0.72 x 100= 72
Answer:
X=-3 y=-8
Step-by-step explanation:

Put the second one in first

