Use the clustering estimation technique to find the approximate total in the following question. what is the estimated sum of 105, 101, 139, and 78?

cluster estimation is to estimate sums when the numbers being added cluster near in value to a single number. it is 100 in this case.

estimate sum = 100x4 = 400

450

step-by-step explanation:

you get texts and minutes, so why not

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value