The equation that we have to build has the following form:
[tex]y=mx+b[/tex]
• The fixed cost of the phone is $88, which will be represented by ,b,.
,
• The variable cost per month is $116.43, which will be represented by ,m,.
,
• y ,is the dependent variable that we want to know (, C(t) ,)
,
• x ,is the independent variable, in our case, ,t,.
Replacing the values given in the problem we get:
[tex]C(t)=116.93t+88[/tex]
The cost for 22 months will be:
[tex]C(22)=116.93\cdot22+88[/tex][tex]C(22)=2660.46[/tex]
Answer:
• Equation
[tex]C(t)=116.93t+88[/tex]
• Cost in 22 months: $2660.46
