<span>Compatible numbers are numbers in a problem that are easy to compute mentally. They are numbers that are close in values to the actual number and this makes it easy to perform mental arithemetics. Compatible numbers can be rounded up to the nearest tens, twenty, etc, in order to make computation easier.</span>
It becomes a liquid
hope this helped
Part A ) The equation is W = $ 6x where x ≤ 40, <span>W is the amount of wage earned and x hours in a week when there is no overtime.
Part B) </span>The equation is W = $ 6*40 + $9 y =$ 240 + $9 y where <span>y as the overtime hours = total number of hrs - 40.
Part C) </span>$ 240 + $9 y = $330. y is 10 hrs. Hence the total hours is 50 hrs.
Since 12 cost $27, you can use compatible numbers to make it ~$28. So, then for 6, it would cost $14 because you just halve everything. Is that what you are getting at?