University Data -- If you know that a student receives financial aid, what is the probability that the student is a graduate student? Thank you.

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done

Find the inverse of the given function. f(x)= -1/2sqr x+3, x greater than or equal to -3

Tiny's tattoo parlor sold 389389 tattoos this month. 4343 of those tattoos were arm tattoos. based on this data, what is a reasonable estimate of the probability that the next customer does not get an arm tattoo?