I have addressed the first question that i have encountered on the picture.
Q - 6
Maria's June Bill = (Fixed rate + Nos. of minutes in excess of 1,000 x 0.35 + 7.40) x (1 + excise rate) = [89.99 + (1,422 - 1,000) x 0.35 + 7.40] x (1 + 4.1%) = $ 255.14
hence, the correct answer is the option b.
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