CPhill

(C)  is correct

Look at the graphs

f(x) is in red    g(x)  is in blue

(B) best describes the two functions

1400 = (x+11)(x-11)  simplify and rearrange

1400 = x^2 - 121     add 121 to each side

1521 = x^2          square root each side

± √1521  = x^2

± 39  = x  

(x - 2)^3 =

x^3  - [3x^2 * 2]  + [ 3x * 2^2 ]  - 2^3  =

x^3 - 6x^2 + 12x  - 8

Thanks, Alan......

LOL!!!!......5 points from me.....!!!!

Thanks, Obscure......

2    =  2¹

10  =  2¹ x 5¹

15 =          5¹ x 3¹     

Take each unique factor along  with its highest power 

2¹ x 3¹ x 5¹  =  2 x 3 x 5 = 30

No prob, DR......

y= -3x+7  [ green line below]

Slope of perp line  = 1/3       and we have the point   (0,7)

So we have

y= (1/3)x +7  [orange line below]