Question

Current Grade: 21.5/50.0 Remaining Time: 57:57:05 u need help with this problem or this material? ember to use the Academic Support resources able on your homepage in Brightspace or the learning modules A basic cellular package costs $20/month for 60 minutes of calling with an additional charge of $0.30/minute beyond that time. The cost function C() for using 3 minutes would be • If you used 60 minutes or less, i.e. if if x < 60, then C(x) = 20 (the base charge). • If you used more than 60 minutes, i.e. (x - 60) minutes more than the plan came with, you would pay an additional $0.30 for each of those (z - 60 minutes. Your total bill would be C (2) = 20 + 0.30 (0 - 60). If you want to keep your bill at $50 or lower for the month, what is the maximum number of calling minutes you can use? minutes. The maximum calling minutes you can use is 70 Next Back Question Menu Quit & Save Submit Assignment

Answer 1

C(M) = 20 + 0.38 (7-60) where n denete the number of minutes used for calling When ((n) = 50 50 = 20 + 0.30 (2-60) 20 +0.30 (n-60) = 50 030 (n-60)= 50 - 20 0.30 (N-60 ) = 30 n-60= 30 X100 - 30 30 = 100 0.30 n- 60= loo n = 100+ 60= 160 minuter Manimum calling minutes you can you can ue is 160 minuter

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