1. sometimes
2. never
3 .08c = 7.50+.05c 250 pages
step-by-step explanation:
1. sometimes
the theoretical probability of rolling a 1 is 1/6. perhaps you got really lucky and never rolled a 1 in those 60 times. your experimental probability is 0. or perhaps you rolled a 1 20 times. your experimental probability is 20/60 is 1/3. it really just depends on how you rolled in that experiment.
2. never
the probability of the event occurring is 1. that is being 100 % sure it will happen. that is the maximum amount of confidence we have.
3. no customer card cost: .08 times number of pages
customer card cost: 7.50 + .05 times number of pages
we want to find when it costs the same amount, so we will set these equal
let c = number of pages
.08c = 7.50+.05c
subtract .05c from each side
.08c-.05c = 7.5+.05c-.05c
.03c=7.5
divide each side by .03
.03c/.03 = 7.5/03
c =250
the cost is the same at 250 pages
