Coin is flipped 70 times and lands on tails 42 times. what is the relative frequency of the coin landing on tails? 30% 40% 50% 60%

Witch represents the inverse of the function f(x)=1/4x-12

Frank is lending $1,000 to sarah for two years. frank and sarah agree that frank should earn a real return of 4 percent per year. instructions: a. the cpi (times 100) is 100 at the time that frank makes the loan. it is expected to be 113 in one year and 127.7 in two years. what nominal rate of interest should frank charge sarah?

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?