The cost of a hamburger is $2.50. each additional hamburger costs $2.00. sully wrote this explicit rule to explain the sequence of costs f(n)2+2.5(n- 1). using this rule, he found the cost of 12 hamburgers to be $29.50 is this number correct? if not, identify sully's error

Sully is correct there is no error.

Step-by-step explanation:

Given : The cost of a hamburger is $2.50. Each additional hamburger costs $2.00. Sully wrote this explicit rule to explain the sequence of costs .

To find : Using this rule, he found the cost of 12 hamburgers to be $29.50 Is this number correct? If not, identify Sully's error

Solution :

The cost of a hamburger is $2.50.

Each additional hamburger cost $2.00.

Sully wrote this explicit rule to explain the sequence of costs:

To find the cost of 12 hamburgers substitute n=12,

The cost of 12 hamburgers to be $29.50.

Therefore, Sully is correct there is no error.

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