Question Progress The gas meter readings at the beginning and end of a period were:
6
4
9
6
6
7
8
5
The cost of the gas is 13p for each unit.
There is also a fixed charge of £21.45.
Calculate the cost of the gas.
You must show your working.

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

What is negative 3/9 times negative 2/8 ?