Rachel finds that she must go to her hair dresser every 3 weeks to have her hair cut as it grows exactly 1 inch in length in that time. Compute the speed at which Rachel's hair grows in miles per hour.

Question

anonymous · Answer

3 weeks to hours :
24 hrs in a day x 7 = 168 hrs in a week x 3 = 504 hrs in 3 weeks

1 inch to mile :
1 inch is 1/12th of a foot or 0.0833
5280 ft in 1 mile

I am getting confused here....hold on

anonymous · Answer

@cwrw238 ...can you help ...please

anonymous · Answer

My final answer is 0.0000000094 because I took 1 inch divided by 63360 and got 1.57x 10^-5 and divided that by 168 hrs is that right?

anonymous · Answer

I am not sure....I am sorry but I have to go...I lost track of time....

anonymous · Answer

Wait is it 3.11 x 10^-8