gina is comparing four long distance phone plans. the table shows the cost of each plan. cost of phone plans…

gina is comparing four long distance phone plans. the table shows the cost of each plan. cost of phone plans plan monthly fee cost per minute a $15 $0.05 b $5 $0.15 c $10 $0.10 d $20 $0.20 if gina plans to use 500 minutes each month, the most cost effective plan is

gina is comparing four long distance phone plans. the table shows the cost of each plan. cost of phone plans plan monthly fee cost per minute a $15 $0.05 b $5 $0.15 c $10 $0.10 d $20 $0.20 if gina plans to use 500 minutes each month, the most cost effective plan is

Answer

Answer:

Plan A

Explanation:

Step1: Calculate cost of Plan A

$15 + 0.05\times500=15 + 25 = 40$

Step2: Calculate cost of Plan B

$5+0.15\times500 = 5 + 75=80$

Step3: Calculate cost of Plan C

$10 + 0.1\times500=10 + 50 = 60$

Step4: Calculate cost of Plan D

$20+0.2\times500=20 + 100 = 120$ Since $40<60<80<120$, Plan A is the most cost - effective.