Question

If the range of the function f(x) = 7x – 2.7 is {14.1, 30.9, 41.4, 58.9}, what is its domain?

Answer 1

all real numbers

Answer 2

A. {1.8, 3.4, 5.6, 9}B. {3.2, 3.9, 5.8, 8.4}C. {2.4, 4.8, 6.3, 8.8} D. {3, 4.6, 6.7, 8.9}

Answer 3

@ehuman

Answer 4

do you know it? @ehuman

Answer 5

note: domain is meaning input => x
range is meaning output => f(x) = y
14.1 = 7x - 2.7
16.8 = 7x
x = 2.4
so, answer only
C. {2.4, 4.8, 6.3, 8.8}