Answer:
$7.76
Step-by-step explanation:
Let x be the amount he was making before the raise.
He had an increase of 3.1% of x added to x which resulted in a new salary of $8.00 per hour.
Mathematically:

x = $7.76
He was making $7.76 before the raise.
Calculate the mean, median, and mode of the following set of data. Round to the nearest tenth. 10, 1, 10, 15, 1, 7, 10, 10, 1, 6
klemol [59]
First order the data:
1, 1, 1, 6, 7, 10, 10, 10, 10, 13, 15
the mean is all the numbers added together divided by how many there are, 1 + 1 + 1 + 6 + 7 + 10 + 10 + 10 + 10 + 13 + 15 = 84 84/11 = 7.636364 ≈ 7.6
the median is the number in the middle of the list, count numbers from each end, until you either have one or two left, if one left then its that one, if two left then its half way between the two
the median for your set is 10
The mode is the most common number, in your set 10
Divide the limit by the weight of one book to find the number of books allowed.
70/12 = 5.833 books
You cannot send a part of a book, so round down. The answer is 5 books.
They bought 2 cat toys and 3 dog toys.