2. What is the first step to solve the following system of equations using substitution? 2- y = 12
2x - y = 12
Add the two equations together.
Solve the first equation for x.
Multiply the first equation by 2.
Divide the second equation by 2.

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

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

Write the equation in logarithmic form 8^x=64