Sommertraining Mathematik 4, Arbeitsheft

21 It’s teatime London’s most famous teaseller wants to offer a new mixture of two different sorts. He mixes 5 pounds “Queen’s Blend”, which costs 9 £ per pound, with “London Darling”, which costs 18,25 £ per pound. He wants to offer this newly created mixture for 12 £ per pound. How many pounds of “London Darling” does he have to use to get his desired mixture? Can you think of a catchy name for this new product? He needs kg of “London Darling”. Catchy name: Shopping in London Mary spent her holiday in England doing a great deal of shopping in London. Find out what Mary bought on her trip by checking which tables define a function. What did Mary buy? What a rainy trip! Before the trip Marina checked the temperature (in °C) and the amount of rainfall (in mm) for two weeks. She has put all the data into a table: temperature (°C) 27 30 21 18 20 22 23 24 26 27 19 24 26 25 rainfall (mm) 2 2 0 1 6 1 3 1 0 0 7 0 0 1 Show this data in a scatterplot 1 ! Fill in the fourfold table 2 ! Interpret the data with your own words! 1 scatterplot = Streudiagramm 2 fourfold table = Vierfeldertafel temperature (°C) rainfall (mm) 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 15 rainfall <3 mm ≥3 mm sum tempe- rature <24 °C ≥24°C sum x 1 1 1 1 y 2 3 4 5 x 1 2 3 4 y 5 3 –1 –3 x 1 2 3 4 y –2 –2 –2 –2 x 1 2 3 4 y 5 7 9 11 x 1 2 3 4 y 1 2 1 2 x 1 2 1 2 y 2 3 4 5 Nur zu Prüfzwecken – Eigentum des Verlags öbv