The function y = f (x) is linear. Given f-¹ (0) = 3 and f (1) = - 4, find the formula of
f (x) and f-¹ (x)

Step-by-step explanation:

Using slope-intercept form of linear function:  

Find inverse of slope-intercept form:

swap x and y:  

Make y the subject:

Equate the equations and solve for :

Substitute found value for into one of the equations and solve for :

Substitute found values of and into equations for and :

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies