Answer:
f-1(x)=x-4
f-1(4)=0
Step-by-step explanation:
to get an inverse function, replace x with y, and y with x.
y=x+4 ---> x=y+4
solve for y: x=y+4 --> y=x-4 --> f-1(x)=x-4
f-1(4)=(4)-4=0
Answer:
40
Step-by-step explanation:
Write and solve a proportion:
2 / 150 = x / 3000
150x = 6000
x = 40
Probability of choosing a purple jelly bean, eating it, and then choosing a blue jelly bean is; 12/95
We are given the contents of the package as;
Red jelly beans = 4
Green jelly beans = 2
Purple jelly beans = 8
Blue jelly beans = 6
Total number of jellybeans = 4 + 2 + 8 + 5 = 20
Probability of selecting a purple jelly bean and eating it = 8/20
After picking one, we are left with 19 jellybeans. Thus;
Probability of picking a blue jelly bean and eating it = 6/19
Thus;
Probability of choosing a purple jelly bean, eating it, and then choosing a blue jelly bean = 8/20 × 6/19 = 48/380 = 12/95
Read more about probability selection at; brainly.com/question/1274894
