Martin had to buy some cleaning materials.
the cost of the cleaning materials was £64.00 plus vat at 17.5%.
work out the total cost of the cleaning materials.

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is . reset next