for the first one its -19, -1, 17, 75
because the instructions says to number them from least to greatest.
your least would be the negative numbers (the number with the minus sign) and your greatest number would be the the one without a negative sign.
Remember that the bigger the negative number the smaller it is. heres a number line to help you figure out the least to greatest.
Least_____Greatest
...-5,-4,-3,-2,-1, 0, 1,2,3,4,5...