Factor completely 169x^2 − 64

a. 13x − 8

b. (13x + 8)^2

c. (13x − 8)^2

d. (13x + 8)(13x − 8)

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?