Answer:
B = $49 + $99m is a good equation; they don't actually ask for the number of months to be found, but I showed it anyway
Step-by-step explanation:
Let B be the total bill amount.
Let m be the number of months of service provided.
Then the bill total,
B, is $49 for install + $99 times the number of months of service.
B = $49 + $99 x m
*** <u>B = $49 + $99m</u>
Now, we know B is $544, so
544 = 49 + 99m
<u>-49</u> <u>-49</u>
495 = 99m
495/99 = 99m/99
5 = m
*** After <u>5 months</u>, the bill is $544