First we must divide 9 by 3.
9/3 = 3
Then multiply it by 8
3*8 = 24. Hope this helps!
It is the letter A your welcome
Answer:

Step-by-step explanation:
Given


Required

First, we calculate the z score






So:


From z probability, we have:

Answer:
x= -4 & y=-12
Step-by-step explanation:
multiply y=3x by 2
giving you 2y=6x
subtracting 2y=x+20 from 2y =6x
=> 5x=-20
dividing through by 5
=> x=-4
put x=-4 into y=3x
=> y=3(-4)
<em>y</em><em>=</em><em>-12</em>