Question

The price of a 7 ​-minute phone call is ​$1.75. What is the price of a 14 ​-minute phone​ call?

Answer 1

$3.50

Explanation:

14 is double 7

So the price should be double

1.75 x 2 = 3.5

(Assuming there's no base fee and the charge is purely for minutes)