Answer:
y=4/5x+B
what is the whole question?
4 + s = 9
9 - s = 4
These should be the two ways to solve.
A;
30 + 8g = c
B;
60 + 3g = c
60 + 3g = 30 + 8 g
30 = 5g
g = 6
6 gigs would have to be used in both for the cost to be the same
x − 3y = 12
<span>2x + 6y = 60</span>
<span>x=12+3y</span>
<span>2(12+3y)+6y=60</span>
<span>24+6y+6y=60</span>
<span>24+12y=60</span>
<span>12y=60-24</span>
<span>12y=36</span>
<span>y=36/12</span>
<span>y=3</span>
<span>and since the only answer you have with y being 3 is 21,3 the answer is D.(21,3)</span>