Every day, navya's teacher randomly picks a number from 1 to 80 to be the number of the day. the number of the day can be repeated. there are 180 days in the school year. predict how many days the number of the day will be greater than 20.

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

Indicate the formula for the following conditions: p^c(n,r)=