It would show the average time spent on the homework.
And the average distance between the mean and the lowest and highest numbers in the data.
The cube root of 2744000 is 140
The equivalent fractions are 3/4 & 12/16 hope this helps!!
I'm assuming the funds earn 5% yearly?
Call x the amount he saves every year. The first year's deposit will be multiplied by 1.05 three times, the next will be multiplied by 1.05 twice, the third will be multiplied by 1.05 once, and the fourth will not generate interest (as it will immediately be used to buy the car).
Therefore, x(1.05^3+1.05^2+1.05+1)=21000, so 4.31x=21000. Dividing by 4.31, we see that x is approximately equal to 4872.
