Answer:
I would think it would be C. because there is not other answer.
I hoped this help.
please mark brainliest if correct
23245 + 21.50b = 46389 + 10.50b
21.50b - 10.50b = 46389 - 23245
11b = 23144
b = 23144/11
b = 2104 <== the cost will be the same at 2104 books
<em>x</em> = liters of 1% solution
<em>y</em> = liters of 5% solution
<em />
<em>x</em> + <em>y</em> = 16
0.01<em>x</em> + 0.05<em>y</em> = 0.04*16 = 0.64
<em />
<em>y</em> = 16 - <em>x</em>
<em />
0.01<em>x</em> + 0.05(16 - <em>x</em>) = 0.64
0.01<em>x</em> + 0.8 - 0.05<em>x</em> = 0.64
0.16 = 0.04<em>x</em>
<em>x</em> = 4
<em>y</em> = 12
You seemed to have gotten the equation wrong, but don't worry I'll help you
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First you simplify the equation
4=<span><span><span>(-1)</span><span>(-3)</span></span>+b
(A negative times a negative is a positive)
</span>4 = 3 + b
(Flip the equation)
b + 3 = 4
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Then you subtract 3 from each side
<span><span>b+3-</span>3</span>=<span>4-3
</span>b = 1 is your answer
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y = -1x - 7 is wrong as well
To find the answer just add -4 on each side for y+4=-<span>1<span>(x-3)</span></span>
<span>y+4+-4</span>=-<span>x+3+-4
</span>y = -<span><span>x - </span><span>1 is the answer
</span></span>To graph, plot points on Y-intercept of -1 and place another point at (-2,1)
