The answer is 47 minutes.
You basically imagine this: Debra has a phone card for $30. She used x minutes every 16 cents. You end up with $22.48.
30 - (0.16x) = 22.48
You can basically graph that equation and the x-intercept will show you your answer. x = 47
Step-by-step explanation:
the solution is found in the images above
It would be <span>1.42857142857.
To find the answer, you would do 6 divided by 4.2</span>