webwork2cmathcumb.edu W r'rrlr . \"Z: . i I 1 a" "113, W Um, 3;\" HT Emil. { WeBWc... Problem 10 . . PreVIous Problem Problem List Next Problem User Settings Grades You want to choose one long distance telephone company from the following options: Company A charges $0.34 dollars per minute (no fixed monthly charge). Company B charges $13.95 per month plus $0.18 per minute. Company C charges a fixed rate of $50 per month. :ro::em ; Let A(m), 3(a), and 0(3) denote the monthly charges of Company A, B, and C respectively for spending :c minutes on long distance calls. ro em Problem 3 (a) Find a formula for the monthly cost of using Company A, A(z): Problem 4 A($) : Problem 5 Problem 6 (b) Find a formula for the monthly cost of using Company B, 3(2): Problem 7 3(3) = Problem 8 (c) Find a formula for the monthly cost of using Company C, C(m): Problem 9 0(1) = Problem 11 (d) If you spend 125 minutes talking long distance in a month, which of the three companies will be cheapest? Enter the letter (A, B, or C) here: Problem 12 Problem 13 (e) Given the graph below, match the number of each graph to corresponding company it represents: 45 total \"and; cost 38 15 so no 156 Zoo )1 nunber or ninutes Per munch + webwork2.math.umb.edu + NFL... Dolp.. C Fant... Priz... IR Ama... Bb Upl... Mac... App... Bb Onli... WeBWo... Ho ... Rec... Bb Ann... http... Previous Problem Problem List Next Problem Problem 1 Let A(x), B(x), and C (x ) denote the monthly charges of Company A, B, and C respectively for spending a minutes on long distance calls. Problem 2 Problem 3 (a) Find a formula for the monthly cost of using Company A, A(a): Problem 4 A(a) = Problem 5 (b) Find a formula for the monthly cost of using Company B, B(a): Problem 6 B(a) = Problem 7 Problem 8 (c) Find a formula for the monthly cost of using Company C, C(a): Problem 9 C(2) = Problem 10 Problem 11 (d) If you spend 125 minutes talking long distance in a month, which of the three companies will be cheapest? Enter the letter (A, B, or C) here: Problem 12 Problem 13 (e) Given the graph below, match the number of each graph to corresponding company it represents: 45 total monthly cost 30 15 / 58 108 150 208 x number of minutes per month Company A Company B Company CE webwork2.math.umb.edu Logged in as ezequiel.corder0001@umb.edu. L09 DIR 9 ( webwork / math_13010_eroshkin_f22 / math130_hw3_ch1secS_lines / 11 MAIN MENU Previous Problem Problem List Next Problem Courses Homework Sets mimomcmsm Math130 HW3 Ch1Sec3 Lines: Problem 11 (1 point) User Settings G d ra es In a college meal plan you pay a membership fee, then all of your meals are at a fixed price per week. If 30 meals cost $152.5 and 70 meals cost $272.5 , answer the following questions: a) Write a formula for the cost of a meal plan, C , in terms of the number of meals, n . c : Problem 1 Problem 2 b) What is the membership fee? $ Problem 3 Problem 4 c) What is the price per meal? $ per meal Problem 5 Problem 6 d) Find the cost for 50 meals. $ Problem 7 Problem 8 e) Find n in terms ofC . n = Problem 9 f) Finally, use your answer in part (e) to determine the maximum number of meals you can buy on a budget of $300. Maximum number of meals implies if Problem 10 you find that n = 3.9, then you can buy a maximum of 3 meals. You must truncate any decimal solutions (which is different from rounding). Problem 12 n = meals Problem 13 Note: You can earn partial credit on this problem. Preview My Answers Submit Answers