The table below shows the cumulative distance and the number of hours Ryan drove on vacation. Hours Driving Distance Traveled (miles)
0 0
3 186
4 248
7 434
10 620

Based on the information in the table, at what speed did he drive (miles per hour)?
A.
69 miles per hour
B.
62 miles per hour
C.
52 miles per hour
D.
42 miles per hour

Some primitive triples are ...  (3, 4, 5)  (5, 12, 13)  (7, 24, 25)  (9, 40, 41)One interesting characteristic of these is that the sum of the last two numbers is the square of the first number.Any multiple of these will be a Pythagorean triple.Now consider your list.  a) (10, 24, 26) = 2×(5, 12, 13) . . . IS a Pythagorean Triple  b) 2×(7, 24, 25) = (14, 48, 50), so (14, 48, 49) is NOT a Pythagorean Triple  c) 3×(3, 4, 5) = (9, 12, 15), so (9, 12, 16) is NOT a Pythagorean Triple  d) (9, 40, 41) . . . IS a Pythagorean Triple  e) 5×(3, 4, 5) = (15, 20, 25) . . . IS a Pythagorean Triple The sets of side lengths that are Pythagorean Triples are ...  (10, 24, 26)  (9, 40, 41)  (15, 20, 25)