Final answer:
To qualify for the cross-country biking expedition, you need to write an average of at least 35 miles per day for five consecutive days. The distances of your ride in the first four days are 45, 33, 27, and 26 miles. Therefore, you need to ride 44 miles on the fifth day to qualify.
Step-by-step explanation:
To qualify for the cross-country biking expedition, you need to write an average of at least 35 miles per day for five consecutive days.
The distances of your ride in the first four days are 45, 33, 27, and 26 miles. To find the distance you need to ride on the fifth day to qualify, you can use the following formula:
Total Distance = Average Distance * Total Days
Total Distance = 35 miles/day * 5 days = 175 miles
Now, subtract the distances of the first four days from the total distance:
175 miles - (45 miles + 33 miles + 27 miles + 26 miles) = 44 miles
Therefore, you need to ride 44 miles on the fifth day to qualify for the competition.