B. Since she earned 35 (+35), spent 15 (-15), bought a book for $7 (-7) and got 10 dollars from mom (+10)
You mutiply the 50 by 2 to get 100 but would change the 41 and multiply that by two and get 82/100
Answer:

Step-by-step explanation:
We would have to convert the standard equation into slope-intercept form.
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<h3><u>Converting the equation into Slope-Intercept Form:</u></h3>
<u />
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<h3><u>Identifying the Slope and Y-Intercept:</u></h3>
<em>General slope-intercept form is: </em>
<em></em>
<u />
In the equation
, '-2' would be the slope since it is in 'm's place, and '3' would be the y-intercept since it's in 'b's place.
<em>Therefore:</em>
<em></em>
<em></em>
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<em>Hope this helps!</em>
Subtract 30, then factor the equation.
... x² = 30
... x² - 30 = 0
... (x -√30)(x +√30) = 0
By the zero product rule, the solutions are values of x that make a factor be zero.
... x - √30 = 0 . . . . the first factor is zero
... x = √30
... x + √30 = 0 . . . . the second factor is zero
... x = -√30
The solutions are . . .
... x = ±√30 . . . . . matches your 3rd choice