Which equation is graphed in the diagram below

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

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

The square root of 9x plus 7 plus the square rot of 2x equall to 7