Hello!
Multiply the amount of bags Mr. Eaton bought by the amount of pounds each bag weighs:
15 * 45 = 675
The total weight of the topsoil Mr. Eaton bought is 675 pounds.
When you multiply a whole number by a fraction, multiply the whole number by the numerator ( top number) and then divide by the denominator (bottom number).
8 x -8/9 = (8 *-8)/9 = -64/9 = -7 1/9 = -7.1
The median is the middle number of the data plot. Since there 30 numbers, there isn't a exact middle. To find the median you must add the two middle number then divide by 2.
In this case you must add 87 and 88 which gives 175.
Then divide 175 by 2 which gives 87.5
87.5 is the median
As we are given with

we are supposed to simplify this expression. which can be done as below

