Steps for how to use a number line to multiply a 2-digit number by 20

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

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?

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?