Answer:
5
Step-by-step explanation:
Using the rule of radicals
×
⇔
, then

= 
=
× 
= 5
The correct answer should be 7 levels for the entirety of the week. However, there are two solutions that satisfy this question so perhaps it is really asking how many additional levels he is able to beat. In this case, the answer should be B: x > 5 2/3
Rearrange the given equation in slope intercept form

slope of the required line is

equation is given by
125 = 5 * 5 * 5 = 5^3
Its a perfect cube.
Your answer is 3x^(2)+3x+6
Hope this helped!