Correct option D) [tex](0.035)m = 22.40[/tex] .
Step-by-step explanation:
Here we have , A prepaid phone card has a balance of $22.40 remaining. Given that it costs $0.035 per minute . We need to find an equation represents the number of minutes, m, you may talk using the card . Let's find out :
Total balance = $22.40
It costs $0.035 for one minute of call . Let's suppose that with balance $22.40 we can talk for m minutes . So equation will be :
⇒ [tex](0.035)m = 22.40[/tex]
⇒ [tex]\frac{(0.035)m}{0.035} = \frac{22.40}{0.035}[/tex]
⇒ [tex]m= \frac{22.40}{0.035}[/tex]
Therefore , an equation represents the number of minutes, m, you may talk using the card is [tex](0.035)m = 22.40[/tex] . Correct option D) [tex](0.035)m = 22.40[/tex] .