Gwen bought a new car. each year, the value of her car depreciated by 9%. calculate the number of years after which the value of her car was 47% of its value when new.

8 years

Step-by-step explanation:

What I would recommend is to just plug in a number for the original value of the car (100). So you have to find when the car will be worth $47. Not 53 like what someone else said because you're supposed to find when it's AT 47% of it's original price, not 47% LESS than it's original price. Now just take a calculator and keep taking 9% off of the car (meaning 100 x .91 [.91 is 1.00 minus .09, which is what you want], then "ANSWER" (NOT 100) x .91 etc. And when you reach 47, count how many times it took you to get there.

I got 8 years (but it's 2 cents off)

I hope this helped!

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

constant of proportionality = 3 and the equation is c = 3p.

step-by-step explanation:

c = kp   where c = amount of caffeine in mg., p = oz of pepsi and k is the constant of proportionality.

substituting the values given:

24 = 8k

k = 3.

the same value of k will be obtained if we substitute the other given values.