(−2)∙(2a−b)+3(a+b) plz help

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

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

Paul’s car is 18 feet long. he is making a model of his car that is 1/6 the actual size. what is the length of the model?