The circumference of the circle in the above figure is 128 ft. what is the length of ab?

a. 45 ft
b. 16 ft
c. 105.5 ft
d. 22.5 ft

Need solving this second acceleration problem.

How do i take any fraction and make it into a decimal or percentage?

One cell phone plan charges $20 per month plus $0.15 per minute used. a second cell phone plan charges $35 per month plus $0.10 per minute used. write and solve an equation to find the number of minutes you must talk to have the same cost for both calling plans.