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What are the different types of price discrimination that can be employed?

First-degree price discrimination, alternatively known as perfect price discrimination, occurs when a firm charges a different price for every unit consumed. The firm is able to charge the maximum possible p...
Answered by • Economics tutor
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How is blood glucose levels controlled by the body (homeostasis) ?

Controlling high blood glucose Blood glucose levels are important to control because glucose is our key source of energy in respiration. When blood glucose levels are too high, this is detected by the pancre...
NB
Answered by Nazeya B. • Biology tutor
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In a village the number of houses and the number of flats are in the ratio 7 : 4 the number of flats and the number of bungalows are in the ratio 8 : 5 There are 50 bungalows in the village. How many houses are there in the village?

Good question! This is exactly the kind of question that could come up on the GCSE non-calculator paper. I think the main thing that makes this question tricky is sifting out the information and figuring out...
EJ
Answered by Ellie J. • Maths tutor
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The point P has coordinates (3,4), Q has the coordinates (a,b), a line perpendicular to PQ is given by the equation 3x+2y=7. Find an expression for b in terms of a

Firstly, let's have a look through the question to find the key words and write down any equations you might need. Perpendicular means the two lines cross and meet at a right angle, we also have an equation ...
CB
Answered by Charles B. • Maths tutor
6755 Views

What is the difference between public goods and externalities?

Public goods are non-excludable and non-rival - i.e. you cannot be stopped from consuming the good and this does not affect others' consumption Externalities are benefits/costs to a third party outside the m...
NS
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