Laura paid $27 for three books. if all of the books cost the same, how much did one book cost?

$9.

Step-by-step explanation:

She paid $27 for three books.

All three books cost the same amount, so divide $27 by three.

The answer is $9.

b

step-by-step explanation:

answer would be 8.64 or s = 11π/4 inches

step-by-step explanation:

s = r θ  

where s = arc length  

r = radius = 3 inches  

θ = central angle in radians = ( π /180)*165  

s = 3(π/180)*165  

= 8.64 inches