Suppose you have two coins. what is the probability of both of your coins landing on heads

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?

Renting a room at the willow tree resort costs $125 for 2 people. each additional person is $25. write an expression that shows the cost for n extra people