A person buys a phone for $81 and signs up for a single-line phone plan with 2000 monthly anytime minutes. The plan costs $119.96 per month. Write an equation that can be used to determine the total cost, C(t), of this phone plan for t months. Then, find the cost for 22 months, assuming that the number of minutes the person uses does not exceed 2000 per month. An equation that can be used to determine the total cost, C(t), of the phone plan fot t months is C(t)=?

Question

A person buys a phone for $81 and signs up for a single-line phone plan with 2000 monthly anytime minutes. The plan costs $119.96 per month. Write an equation that can be used to determine the total cost, C(t), of this phone plan for t months. Then, find the cost for 22 months, assuming that the number of minutes the person uses does not exceed 2000 per month.  An equation that can be used to determine the total cost, C(t), of the phone plan fot t months is C(t)=?

SabadisO · Accepted Answer

Step 1  Refer to the question,  As person buys a phone at $81 and monthly plan costs $ 119.96  Let t be the number of months  and C(t) be the total cost of t months.  t= number of months  C(t)= total cost at t months  Step 2  As the phone cost $86 which is fixed cost  and monthly plan costs $ 119.96 is a variable cost.  Then total cost is the of fixed cost and variable cost.  Fixed cost =$81  Variable cost =$119.96(t)  C(t)= Fixed cost + Variable cost  =$81+$119.96(t)  Step 3  Then to find the cost fro 22 months just plug the vale of t=22 in the equation of total cost as,  C(t)=$81+$119.96(t)  =$81+$119.96(22)  =81+2639.12  =$2720.12

A person buys a phone for $81 and signs up for a single-line phone plan with 200

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