What is the justification for the step taken from line 2 to line 3?
3x+9-7x=x+10+x
-4x+9= 2x+10
-6x+9 = 10
6x=1
x=1
the subtraction property of equality
the multiplication property of equality
combining like terms on one side of the equation
the distributive property

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

Select the correct answer what is the 10th term of the geometric sequence 3,6, 12, 24,48 a. 512 b. 3,072 c. 768 d. 1,536

What rule describes a dilation with a scale factor of 4 and the center of dilation at the origin?