If you would like to solve the equation 0 = 1/2 - 2 * y, you can calculate this using the following steps:
0 = 1/2 - 2 * y
2 * y = 1/2 /2
y = 1/2 / 2
y = 1/4
The correct result would be 1/4.
3 scoops and a quarter? not really sure if you were saying one and a half cups or if the Baker was using ONE half cup scoop
1 1/2+1 1/2+1 1/2+ 1/4 =4.75
So basically you can determine which of them are functions by using the vertical line test. If you can draw any vertical line that intersects more than one point of the relationship, then it is not a function.
I'm not complete sure about the discrete one but, hopefully it's right :).
1.44 divided by 16 which is 0.09 and to check answer you take 0.09 and multiply by 15 and you get 1.44
For
and
to be independent, it must be the case that
You're given
while
So yes, the two events are independent.