Answer:
c= 20h + 60
Step-by-step explanation:
The correct dependent variable for this equation is "c" cost of Mr Z's tutoring. The independent variable is "h" hours of tutoring. This is because the independent variable h hours should determine the cost of tutoring c. Therefore the equation can be interpreted: if there are h hours of tutoring which cost 20 per hour, total cost is equal c. Also slope of the equation is 20, coefficient of h.
So you must talking about the circumference I guess.
3.14( pi) * diameter.
x = 8/7
hope this helps on whatever you are doing!
Either a or c because if you choose A you have more time to study and be prepared but c will give you the most knowledge retained