A recent report in USA today indicates a typical family of four spends $490 per month on food. Assume the distribution of food expenditures for a family of four follows the normal distribution, with a standard deviation of 90 month.
A. What percent of the families spend more than $30 but less than $490 per month on food?
B. What percent of the families spend less than $430 per month on food?
C. What percent spend between $430 and $600 per month on food?
D. What percent spend between $500 and $600 per month on food?

The table below represents the displacement of a fish from its reef as a function of time: time (hours) x displacement from reef (feet) y 0 4 1 64 2 124 3 184 4 244 part a: what is the y-intercept of the function, and what does this tell you about the fish? (4 points) part b: calculate the average rate of change of the function represented by the table between x = 1 to x = 3 hours, and tell what the average rate represents. (4 points) part c: what would be the domain of the function if the fish continued to swim at this rate until it traveled 724 feet from the reef? (2 points)