Answer:
Step-by-step explanation:
In order to put this equation into slope-intercept form, we want to get this into the form 
, where m is the slope (coefficient) and b is the y-intercept.
We already have the equation 
. Looking at this equation, we can see that we have to get 6x off the left side of the equation and on to the right.
To do this, we can add 6x to both sides. However, if we add 6x to one side we must add it to the other.
So, let’s add 6x to both sides.
We can now rearrange the terms.
Hope this helped!
The third choice, 4x²+18x+0.25=0, is correct.
The frame will have the same thickness on both sides of the mirror. Therefore we add 5+x+x to get the total length, and we have 4+x+x to get the total width.
The area is found by multiplying the total width and total length:
A=(5+x+x)(4+x+x)
A=(5+2x)(4+2x)
Multiplying the binomials, we have:
A=5*4+5*2x+2x*4+2x*2x
A=20+10x+8x+4x²
A=20+18x+4x²
We know that the area is 19.75:
19.75=20+18x+4x²
We need quadratics set equal to 0, so subtract 19.75 from each side:
19.75-19.75 = 20+18x+4x²-19.75
0=0.25+18x+4x²
In standard form, it will be:
4x²+18x+0.25=0
Please where is the graph
Answer: 639
Step-by-step explanation:
