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The value of a new car is £18000. The value of the car decreases by 25% in the first year, and 12% in each of the next 4 years. Work out the value of the car after 5 years.

In the 1st year the car loses 25% of its value, meaning it retains 75% of its value. The starting value (100%) was £18000, so multiplying this by the 75% retained - remembering to change this to decimal nota...
AM
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Maths C1 2017 1. Find INT{2x^(5) + 1/4x^(3) -5}

INT{2x 5 + (1/4)x -3 -5} = (2/6)x 6 + (1/8)x -2 -5x + c =(1/3)x 6 + (1/8)x -2 -5x + c
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Answered by Arbnor K. • Maths tutor
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Why does the demand line slope downwards?

It slopes downwards because a lower price means more buyers will be willing and able to purchase the good (as it becomes more affordable to more people), so the quantity demanded increases. This is an invers...
MA
Answered by Mirza A. • Economics tutor
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What's the key to solving simultaneous equations?

With simultaneous equations, a lot of the maths GCSE qualification, the best approach is to work things out step by step and write every step you take down on your exam paper. This does seem like its time co...
DI
Answered by David I. • Maths tutor
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Using the Keynesian AD/AS diagram, explain why an economy may be in equilibrium at any level of real output

Aggregate demand can be defined as the total demand to the output a country’s economy at a given time interval and given price level. It is calculated through the formula AD=Consumer Spending (C)+ Investment...
IS
Answered by IREM S. • Economics tutor
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