1. Hazim has signed up a postpaid mobile plan with Nexus Telco Sdn. Bhd. The monthly cost, C of the plan (in RM) is given by the function C(x) = 0.30x + 7, where x is the number of minutes used for calls. а. What is the cost of the plan in June 2020 if he talks for 7 minutes everyday? b. If the bill for July 2020 is RM 190, how many minutes were used in that month? с. What is the maximum number of minutes that can be used monthly for RM 220? d. In August 2020, the fixed cost has been increased from RM 7 to RM 12. Write the new function of the mobile plan cost and sketch its graph.
1. Hazim has signed up a postpaid mobile plan with Nexus Telco Sdn. Bhd. The monthly cost, C of the plan (in RM) is given by the function C(x) = 0.30x + 7, where x is the number of minutes used for calls. а. What is the cost of the plan in June 2020 if he talks for 7 minutes everyday? b. If the bill for July 2020 is RM 190, how many minutes were used in that month? с. What is the maximum number of minutes that can be used monthly for RM 220? d. In August 2020, the fixed cost has been increased from RM 7 to RM 12. Write the new function of the mobile plan cost and sketch its graph.
Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
ChapterA: Appendix: Review Topics
SectionA.3: Introduction To Functions
Problem 29PS: Suppose you have a job that pays $8.50 per hour and you work anywhere from 10 to 40 hours per week....
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Transcribed Image Text:1.
Hazim has signed up a postpaid mobile plan with Nexus Telco Sdn. Bhd. The monthly
cost, C of the plan (in RM) is given by the function C(x) = 0.30x + 7, where x is the
number of minutes used for calls.
а.
What is the cost of the plan in June 2020 if he talks for 7 minutes everyday?
b.
If the bill for July 2020 is RM 190, how many minutes were used in that month?
с.
What is the maximum number of minutes that can be used monthly for RM 220?
d.
In August 2020, the fixed cost has been increased from RM 7 to RM 12. Write the
new function of the mobile plan cost and sketch its graph.
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