Acyclist rode an average speed of 10 miles per hour for 15 miles how long was the ride

1.5 hours

if your options were, 1.5 hours, 10 hours, 15 hours, 150 hours (k12 test), that would be it.

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb

real, smaller and upside-down.   so the answer should be b.