Question

For a​ long-distance person-to-person telephone​ call, a telephone company charges $ 0.51 for the first​ minute, $ 0.34 for each additional​ minute, and a $ 2.06 service charge. If the cost of a call is $ 6.65 comma how long did the person​ talk?

Answer 1

6.65 = 2.06 + 0.51 + 0.34 * (t-1)