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19mcgough
27.10.2019 •
Mathematics
With multiple choice question
the function f(x) = 2x + 5 represents ken’s earnings working x hours as a waiter. on
3 separate days, he works 2, 8, and 14 hours, representing the domain of the function.
what is the range of f(x)?
a. {4, 16, 28}
b. {–1, 11, 23}
c. {14, 26, 38}
d. {9, 21, 33}
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Ответ:
D: {9, 21, 33}
Step-by-step explanation:
Ken worked 2, 8 and 14 hours on 3 separate days.
For working 2 hours, his earnings were f(2) = 2(2) + 5, or 9;
For working 8 hours, his earnings were f(28) = 2(8) + 5, or 21; and
For working 14 hours, his earnings were f(14) = 2(14) + 5, or 33
Thus, the range of this function for the days given is {9, 21, 33} (Answer D)
Ответ:
(a) 'p' rows = 12p
(b) 6 rows = 72 students
(c) 20 rows = 240 students
Step-by-step explanation:
12 students = 1 row
(a) 12 · p = 12p
(b) 12 · 6 = 72
(c) 12 · 20 = 240