It'a an arithmetic sequence:
3 miles x 5 week days = 15 miles
6.5 miles x 2 days over the weekend= 13
13 miles + 15 miles = 28
28 miles/ 7 days of the week= 4 miles on average per day
Answer:
I believe the answers are C, D, and E. Sorry if I am wrong.
Explanation:
The discriminant is
D = b^2 - 4ac
D = (-5)^2 - 4(3)(-1)
D = 25 + 12
D = 37
This means 37 is under the square root, and we know the answers are B and F due to this. Also note with these two answer choices, they are in the form where...
Choices A, C, D, and E can be eliminated as the discriminant for these is D = 13.