Can a number between 0 and 1 written in scientific notation be an integer? a negative integer? a positive integer? or a whole number?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Solve the system of equations y= 3/2 - 1, -x+ y =-3

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