Answer:
£149.5
Step-by-step explanation:

_6
(15-9)×2=12, she began with 12 comic books, X=12
Answer:
[50, 410]
Step-by-step explanation:
If the plumber works 0 hours, he still charges $50, so that is the minimum of the range of charges.
If the plumber works 8 hours, his hourly charge of 8×$45 = $360 is added to his fixed charge of $50 for a total of $410. That is the maximum of the range of daily charges.
The range of the function is $50 to $410.
The differnce of 2 perfect cubes
remember
a³-b³=(a-b)(a²+ab+b²)
so