Answer: n= 5
Step-by-step explanation:
The power rule (or law of indices) related to root is given
![x^{ \frac{1}{2} }= \sqrt[2]{x}](https://tex.z-dn.net/?f=%20x%5E%7B%20%5Cfrac%7B1%7D%7B2%7D%20%7D%3D%20%20%5Csqrt%5B2%5D%7Bx%7D%20%20)
We have

Rewrite according to the rule we have

The exponent on y is '1'
Graham : 5u
Michael : 2u
5u + 2u = 7u
7u = £35
1u = £35 / 7 = £5
5u = £5 x 5 = £25
Answer :
Graham gets £25 :)
The answer will be “self interest”.
If she pays in advance: C = 5 ((89n - 5n) + (35n + 4n))
If she doesn't pay in advance: C = 5 (89n + (35n + 4n))
(Where n = day or night and C = cost [for rental car and hotel])