Answer:
Step-by-step explanation:
Yes; In every column the ratio cost to weight is equivalent to the unit rate of $3.50 per pound.
First solve the first equation for 'y'
3x - y = 4 subtract 3x from both sides
-y = -3x + 4 divide both sides by -1
y = 3x - 4 Now take this equation and substitute into the second equation:
5x + 3y = 9
5x + 3(3x - 4) = 9
5x + 9x - 12 = 9
14x - 12 = 9
14x = 9 + 12
14x = 21
x =

or 1.5
Now substitute this value for 'x' into either of the first two equations to find 'y'
I'll use the equation
y = 3x - 4
y = 3(1.5) - 4
y = 0.5
So your solution is (1.5, 0.5)
Answer:
B.
Step-by-step explanation:
<h2>Hope it helps thx</h2>
<h2>#CARRYONLEARNING!</h2>
Answer:
D: -2
Step-by-step explanation:
Let's time 2 on both sides.
Then the equation will be:
(3x+4)=x
3x+4=x
-x -x
2x+4=0
-4 -4
2x=-4
<u><em>x=-2</em></u>
So the answer is D:-2.
Hoped I helped!
Eternalvanimelda27 is my sister, so we have the same answer. :)