Under Plan A, a 2-minute call costs $0.54 and a 4 minute call cost $1.08. Plan B, the cost for x minutes is given by the equation y = 0.289x. Which plan is cheaper?

Question

Gunner Poole

Mathematics

30 October, 03:34

Under Plan A, a 2-minute call costs $0.54 and a 4 minute call cost $1.08. Plan B, the cost for x minutes is given by the equation y = 0.289x. Which plan is cheaper?

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Answers (1)

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Colin · Answer 1

Plan A

Step-by-step explanation:

Find the unit rates for each plan

Plan A:

cost/minutes

0.54/2=0.27

1.08/4=0.27

0.27 per minute

Plan B:

The unit rate is given in the equation

The equation is multiplying 0.289 by x (minutes), so each minute must cost 0.289

About 0.29 per minute

Plan A is cheaper because 0.27 is less than 0.289