Zurich

Distance travelled (km) vs Cost (US $)
0 km - 12 $
2 km - 14 $
4 km - 16 $

Tokyo

Distance travelled (km) Cost (US $)
0 km - 15$
2 km - 16$
4 km - 17$

Chengdu

Distance travelled (km) Cost (US $)
0 km - 11.20$
2 km - 13.00$
4 km - 14.80$

The relationship between cost and distance can be modelled in a different way by means of an equation.
Here is the equation for Zurich, where x is distance (km) and y is cost (US$).
y=x+12
DETERMINE the equations for Tokyo and Chengdu (ii), (iii)

Tokyo (Show Working):

Chengdu (Show Working):

DETERMINE when it becomes more expensive to ride a taxi in Chengdu than Tokyo. At what cost does the situation change?

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.

this is false ^.^ lol

it shoild be o

step-by-step explanation:

answer: 8d

step-by-step explanation:

45+5= 50+5=55+5=60