Question

The phone company NextFell has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone. If a customer uses 350 minutes, the monthly cost will be $154.5. If the customer uses 550 minutes, the monthly cost will be $224.5.

A) Find an equation in the form y = m x + b , where x is the number of monthly minutes used and y is the total monthly of the NextFell plan. Answer: y =

B) Use your equation to find the total monthly cost if 658 minutes are used.

Answer: If 658 minutes are used, the total cost will be dollars.

Answer 1

Please Rate My Answer, Themk youu soin Given Customer use 350 minutes the Cost will be = $15415 monthly monthly If customer use 550 minutes the mo Cost - $224.5 A Y = total cost b = flat Rate m = cost per minute number of minutes In order to find linean Equation ya =mn + b For 350 minutes $154.5 = m(350) + b 154.5 = 35om tb 154.5-33om for 550 minutes 224.5=m(550) + b b 224.5-53om from Eq 0 = eq ④ 154.5-350m - 224.5-55om -350m+55om = 224.5-154.5 200 m = 70 mo 0.35

m$0:35 Result Result substitute in eq @ b = 154-5-350(0.35) - 1545-122.5 b = 32 So, The flat rate b-$32, Cost pez minute m =$0:35 Therefore Equation y = 9 t ville $0.35 0:35x+ ZES g= t Et use.o B Totul moni monthly cost if 658 minutes are used y = 0.35 (658) + 3 2 230.3 +32 y = y = $ 262,3) If 658 minutes are used, the total cost will be $262.3