13.
so out of the pool houses, how many have a hot tub
21/38=0.552=55% aprox
answer is 55%
12 is correct
14 technically, it 0 and -3, -3 could also be correct if you count the negativer root
Given:
The system of equations is


To find:
The solution of given system of equations.
Solution:
Slope intercept form of a line is

where, m is slope and b is y-intercept.
For
, slope is -6 and y-intercept is 10.
For
, slope is -6 and y-intercept is 3.
Slopes of both lines are but the y-intercepts are difference. So, the two lines are parallel.
Therefore, the given system of equation has no solution.
Answer:
Experimental P (red) = 24 Theoretical P (Red) = 30
Experimental P (Blue) = 14 Theoretical P (Blue) = 10
Experimental P (Yellow) = 22 Theoretical P (Yellow) = 20