A baker is calculating the charge of two types of cookies what formula tells to call sand dollars is chocolate chip cookies or $1.50 dozen lemon Francis or 2000 50 Cent dozen

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

What is the value of f(x) = 2.2 for f(-2)?