The gas meter readings at the begenning and end of a period were: 8247 and 8631. the cost of the gas is 11p for each unit. there is also a fixed charge of £25.57

The cost of gas is £67.81

Step-by-step explanation:

Consider the provided information.

The gas meter readings at the beginning and end of a period were: 8247 and 8631.

The unit used is:

The cost of the gas is 11p for each unit.

Therefore, the cost is:

Also there is a fixed charge of £25.57.

Hence, the cost of gas is

g(x) is the negative form of f(x)? because whenever its the negative form it reflects its self over the x axis. idk if this is right though.

step-by-step explanation:

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.