Question

Petra's long-distance phone company charges $0.07 per minute. She would like to call her friend and has $2.80 to spend. Write an equation to represent this situation.

a) 0.07x = 2.80
b) 2.80x = 0.07
c) 2.80 + 0.07x = y
d) 0.07 + 2.80 = x

Answer 1

The correct equation to represent Petra's situation is 0.07x = 2.80, where x is the number of minutes Petra wants to call her friend.

Step-by-step explanation:

The correct equation to represent Petra's situation is a) 0.07x = 2.80.

In this equation, x represents the number of minutes Petra wants to call her friend, and 0.07 represents the cost per minute charged by the long-distance phone company.

To find the total cost, we multiply the cost per minute (0.07) by the number of minutes (x) and set it equal to the amount Petra has to spend ($2.80).

Therefore, the equation 0.07x = 2.80 represents Petra's situation accurately.