Part A: 180 = 4m + b B = 180 + 4m 325 = 9m + b 325 - 180 = 9m - 4m 5m = 145 m = 29 b = 180 + 4(29) = 64 y = 29x + 64 Part B: f(x) = 29x + 64 Part C: At (4, 180) the points raise by 29, so day 5 (5, 209)

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asked Aug 4, 2019 140k views

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Part A: 180 = 4m + b B = 180 + 4m 325 = 9m + b 325 - 180 = 9m - 4m 5m = 145 m = 29 b = 180 + 4(29) = 64 y = 29x + 64

Part B: f(x) = 29x + 64
Part C: At (4, 180) the points raise by 29, so day 5 (5, 209) day 6 (6, 238) day 7 (7, 267) day 8 (8, 296) day 9 (9, 325)