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verizon charges $200 to start up a cell phone plan. then there is a $50 charge each month. what is the total cost (start up fee and monthly charge) to use the cel phone plan for 1 month?

Sagot :

write the total costs a linear function in the form

[tex]y=mx+b[/tex]

in which:

y= total cost

x= number of months

m= charge per month

b= fixed start up fee

replace all data in the equation

[tex]\begin{gathered} y=50\cdot x+200 \\ y=50x+200 \end{gathered}[/tex]

Since the question is the cost for 1 month, x=1

[tex]\begin{gathered} y=50(1)+200 \\ y=250 \end{gathered}[/tex]

The cost for the use of the cellphone is $250