The median is 19 and the lower quartile is the middle number of the 5 numbers before 19
So its 13
B
Answer:
Please see the attached picture for the full solution.
*From the 4th line of the 1st image, you could also expand it using
(a +b)²= a² +2ab +b² and
(a -b)²= a² -2ab +b².
When squaring a fraction, square both the denominator and numerator.
➣(a/b)²= a²/b²
Y = 4/-3 - 1
The slope can either be -4/3 or 4/-3 and the y-intercept is (0,1)
4x + 2 < 14
4x < 14 - 2
4x < 12
x < 12/4
x < 3
S = { x <3 }