Select all of the following true statements if R = real numbers, Z = integers, and W = {0, 1, 2, ...}. W Z
R W
0 Z
∅ R
{0, 1, 2, ...} W
-2 W

How many $20 bills do you need to have to make $280

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

Why is it so easy to buy on impulse and overspend with a credit card? what could you do to counteract this tendency?