If the price for three of them is $2.99, then you divide that by three to find the price for one can. This would equal .9966666667, which could probably be rounded to 99 cents or just a dollar per can. Hope that helps.
The mean is the average of the numbers: a calculated "central" value of a set of numbers.
Therefore: If the amount spent on books per month by all her classmates is leveled that amount would be $30
To calculate it: add up all the numbers, then divide by how many numbers there are
D(X+2)(2X+1) This is your answer.
To get the answer, you divide the length of the board by the size of the pieces wanted, so the equation you get is
9/1.5 = 6
So you can get six 1.5in shelves from a 9ft board
