If

find:

(a) f(3)

(b) f(−1) 

(c) f(0)

2. A car costs £1200 to run in its first year and subsequently the annual cost increases by £100 each year. How much does it cost to run the second year, third year and fourth year? Write down a formula for the cost £C in the x-th year.

3. A cake manufacturer found that the weekly sales for a certain product depended on its selling price. Experience showed that the maximum number that could be sold per week was 20000 but that the actual number sold decreased by 100 for every 1p increase in price. The total product cost consisted of a set-up cost of £200 plus 50p for each product made. Find the formula that relates the weekly profit y to the selling price x. (Assume sales match production)

Transcribed Image Text:

f(x)= x +1 x-1