18. Given the following four lines, pick the true statement. Line 1:
3) = 4x + 3
Line 2:
4 = 3x - 4
Line :
3x + 4) = 8
Line 4:
4x + 3 = -6
A. Lines 1 and 4 are parallel
C. Lines 2 and 4 are perpendicular
D. Unes 1 and 2 are perpendicular
B. Lines 2 and 3 are parallel

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?