The must be b because I got 16.66666
B is false, since by the inclusion/exclusion principle,

By independence, we have
, which is zero if either of
or
is 0, which isn't guaranteed.
Answer:
X*6
Step-by-step explanation:
The virus (x) time 6
Answer:
1 Collect like terms.
5(2x-1)+(30+20)
2 Simplify.
5(2x-1)+50
3 Expand by distributing terms.
10x-5+50
4 Collect like terms.
10x+(-5+50)
5 Simplify.
10x+45
Hope this helps!! <3