The answer is a) although they are not independent, since they are less than 5% of the population, they can be treated as independent.
A pays 3/5 x 85 = £51,-
b pays 2/5 x 85= £34,-
So the answer is £51,-
Answer:
Exact form: 4
√
2 + √
3
Decimal form: 7.38890505...
The first thing you would do is switch the x and y (B).
For example, to find the inverse of y = 2x + 8:
1. Swap x and y
x = 2y + 8
2. Solve for y (set the equation equal to it):
x - 8 = 2y
y = (x - 8) ÷ 2

= 1/2x - 4