Bill Board is trying to reduce his sodium intake to an average of 2300 mg. He records his sodium intake for 4 days. The amounts are 2150 mg, 3005 mg, 2700 mg, and 2315 mg. What is the patient's average daily intake of sodium for those 4 days? What would his 5th day sodium intake need to be to drop him below an average of 2300 mg

To find the average daily intake of sodium for the four days, you add up all the amounts of sodium intake and then divide by the number of days.

So, the total intake for the four days is: 2150 mg + 3005 mg + 2700 mg + 2315 mg = 10170 mg

Now, to find the average: 10170 mg / 4 days = 2542.5 mg/day

This is Bill's average daily sodium intake over the four days.

Now, to determine what Bill's 5th day sodium intake needs to be to bring his average down to below 2300 mg, let's follow these steps:

First, calculate the total amount of sodium intake Bill would need to have over 5 days to have an average intake of 2300 mg per day. 2300 mg/day * 5 days = 11500 mg

Now, subtract the total amount he's already consumed over the first four days from this total. 11500 mg - 10170 mg = 1330 mg

So, on the 5th day, Bill would need to limit his sodium intake to less than 1330 mg to bring his average sodium intake across the five days to below 2300 mg per day.