Question

A self own company charges $40 per month +0.05 cents for each text message sent.Select expression is there a percent of cost in dollars for one month of cell phone usage and sending m text messages .Mark all that apply.

Answer 1

The monthly cost of cell phone is A  =  40 + 0.005 m

Step-by-step explanation:

The monthly fixed charges by mobile company = $40

The cost of sending each text message  = 0.05 cents

Now, 100 cents  = 1 dollar

⇒ 1 cent  =$ $(\frac{1}{100} )$

⇒ 0.05  cent s =$ $(\frac{1}{100} \times 0.05) =0.0005$

Also, the number of text messages send  =  m

So, the cost of sending m text message  = m x ( cost of 1 text )

= m x ( $ 0.0005) = 0.0005 m

Now, Total bill = Fixed rate + cost of m texts

⇒ A  =$40  +  $ 0.0005 m

Hence, the monthly cost of cell phone is A  =  40 + 0.005 m