Every month marina pays $79 for mobile phone service, $59.95 for cable service, and $45.50 for internet service. she can switch to a plan that charge $129.99 a month for all three services . on that plan , how money would marina save monthly? explain how you found your answer

She would save 54.45 because addding them up individually before the plan would cost 184.49 and to find the difference all you have to do is subtract 184.49-129.99 and that would tell you how much she saved

With the three bills she has to pay the total cost comes up to $184. 45
This figure is found from the addition of $79+$59. 95+$45.50

The plan charges $129. 99

To find how much money she saves you would need to calculate the difference

$184. 45 - $129. 99
= $148. 51

Marina saves $54. 46 montly