To get the extrema, derive the function.
You get y' = 2x^-1/3 - 2.
Set this equal to zero, and you get x=0 as the location of a critical point.
Since you are on a closed interval [-1, 1], those points can also have an extrema.
Your min is right, but the max isn't at (1,1). At x=-1, you get y=5 (y = 3(-1)^2/3 -2(-1); (-1)^2/3 = 1, not -1).
Thus, the maximum is at (-1, 5).
Don't understand what you're are asking?
Tap on the picture above.
The answer to question 1 is $8.10.
I got this by finding 18% of $45, which I assume is what the server's tax/tip is.
The answer to question 2 is 7.99.
I got this by finding 8.5 percent of 94 dollars, which is the tax.
Hope this helps, if not, comment below please!!!
:L
