Answer:
it's d
Step-by-step explanation:
multiply 0.31 by the amount of minutes used (27) and add the flat fee to it.
0.31×27+(0.57)= 8.94
x = 19
just subtract 1 from both sides of the equation
take 16+5=21. 29-21=8 so answer is 8
i dont know sry need points sry
X= 18
CBD= 47