Question

Plz help its urgent​

Answer 1

Plan a

Explanation:

plan a costs $15, plus the amount that it would cost for 500 minutes, which is $25. (0.05*500=$25). $15+$25=$40.

If she chose plan b, it would cost $80, because $5+ (0.15*500)=$80.

Plan c would cost $60, by plugging in the numbers to the same function above.

Plan d would cost $120

Answer 2

Lets use 500 minutes and solve for each company:

Plan A = 15 +0.05(500) = 15 + 25 = 40

Plan B = 5 + 0.15(500) = 5 + 75 = 80

Plan C = 10 + 0.10(500) = 10 + 50 = 60

Plan D = 20 + 0.20(500) = 20 + 100 =120

Plan A is the most cost effective.