Respuesta :
x = number of text messages sent
0.2x+40=50
0.2x = 10
5(0.2x) = 5(10)
x = 50
Therefore, 50 text messages would have to be sent or received in order for the plans to cost the same each month. I hope this helps please give me brianlist
Answer:
A cell phone provider charges $30 each month.
It costs $0.05 for every minute of talk and $0.10 for every text sent. There is no charge for receiving texts.
Part A:
Let t represents the number of minutes and x represents the number of texts sent for each month. Let T represent total cost.
Equation becomes:
[tex]T=0.05t+0.10x+30[/tex]
Part B:
Talk (mins)(t) Texts(x)
100 50
124 26
75 75
80 95
50 100
When t = 100 , x = 50
[tex]T=0.05(100)+0.10(50)+30[/tex]
T = $40
When t = 124 , x = 26
[tex]T=0.05(124)+0.10(26)+30[/tex]
T = $38.80
When t = 75 , x = 75
[tex]T=0.05(75)+0.10(7526)+30[/tex]
T = $41.25
When t = 80 , x = 95
[tex]T=0.05(80)+0.10(95)+30[/tex]
T = $43.50
When t = 50 , x = 100
[tex]T=0.05(50)+0.10(100)+30[/tex]
T = $42.50