I got corrected by mreijepatmat, and this is what they said: "Let x be this number so (x+5)(x-5) =75 ===> x^2 -25 = 75 ===> x^2 =100 & x = 10."
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Answer:
A
Step-by-step explanation:
Answer:
The point-slope form would be y + 6 = -4(x + 1) and the slope-intercept form would be y = -4x - 10
Step-by-step explanation:
In order to find the point-slope form, you simply need to put the point and the slope into the base form.
y - y1 = m(x - x1)
y - -6 = -4(x - -1)
y + 6 = -4(x + 1)
Now to find the slope-intercept, simply solve for y.
y + 6 = -4(x + 1)
y + 6 = -4x - 4
y = -4x - 10
Let w represent the number of weeks passed.
The amount of money Ed saved is 6w - 1 (I'm subtracting the one dollar that he owes to someone)
His sister saved 6w + 2.66 (I'm adding the money she already saved).
What value of w makes both expressions equal?
We need to solve the equation 6w - 1 = 6w + 2.66
Let's solve it.
If we subtract 6w from both sides, we get -1 = 2.66
So, there is no solution. They will never have saved the same amount.
This makes sense because they started out with different amounts of money saved, but they are saving at the same rate.
The correct answer is x=5
