21•3.14=65.94 the circumference is 65.94
Subtract $3 from $21 to get the cost of skating for three hours without the rental fee. 21-3=18. $18 was spent on skating for three hours so you'll divide 18 by 3 to get the hourly rate. 18/3=6.
C(x)=6x+3
Answer:
B. (x+8)(x+4)
Step-by-step explanation:

Answer:
21 Miles. Hope your enjoying Middle School!
Step-by-step explanation:
Answer: x^2+^3.x^3x+4 (x2-x-6)-(x^2-x-6) (y^2-2y-8)+(y^2+y-12)
Step-by-step explanation: