Which first step for solving the given system using substitution results in an equation without fractions? [-9x+4y= 10
-9x+3y=3

Ineed me i stuck and i don’t want to get it wrong

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

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?