The answer would be 6, just like the person who said rn
Hey there!
Let's make a linear equation, and we'll plug in our values.
We have:
total = 20 + 2(number of lobsters caught)
We'll have t as total money earned and l as amount of lobsters.
t = 20 + 2l
However, she wants to make 130 dollars in 5 days. We plug in 130 for the total and we multiply the 20 by 5, as that would be her payment in five days excluding the lobsters caught.
130 = 20(5) + 2l
We simplify the right:
130 = 100 + 2l
Subtract 100 from both sides
30 = 2l
Divide both sides by 2
She needs to catch 15 lobsters.
Hope this helps!
Use the identity:
P(A or B)=P(A)+P(B)-P(A and B)
Substitute given values,
0.88=0.62+0.47-P(A and B)
=>
P(A and B)=0.62+0.47-0.88=0.21