Asquare has a perimeter of 12x + 52 units. which expression represents the side length of the square in units?
a)x + 4
b)x + 40
c)3x + 13
d)3x + 43

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

The graph of h(x)= |x-10| +6 is shown. on which interval is this graph increasing

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