Question

On Saturdays, Eve earns 14 per hour for yard work and an extra amount for dog walking. Hours & 1 & 2 & 3 & 4 & 5 Pay & 26 & 40 & 54 & 68 & 82 Which is a reasonable domain for the function f(x)=14 x+12 ? A. 0<x<8 B. 0<x<24 C. 26<x<82 D. 0<x<82
Solution

3.7
(171 Votos)

Iracema
Mestre · Tutor por 5 anos
Resposta
### A.
Explicação
## Step 1: Understand the function and its components### The function \( f(x) = 14x + 12 \) represents Eve's total pay for working
hours on Saturdays. Here:-
: Represents the hourly earnings (\$14 per hour multiplied by the number of hours worked).-
: Represents the base pay Eve receives regardless of hours worked.## Step 2: Analyze the table data### From the table, we observe that:- For
, \( f(1) = 26 \).- For
, \( f(2) = 40 \).- For
, \( f(3) = 54 \).- For
, \( f(4) = 68 \).- For
, \( f(5) = 82 \).This confirms that the function \( f(x) = 14x + 12 \) accurately models the relationship between hours worked (
) and total pay (\( f(x) \)).## Step 3: Determine the reasonable domain### The domain of a function refers to the set of possible input values (
) for which the function is defined. In this case:-
represents the number of hours worked.- Since Eve works between 0 and 8 hours on Saturdays (as implied by the context), the reasonable domain is
.Other options, such as
,
, or
, are not reasonable because they either exceed the maximum hours Eve can work or incorrectly describe the range of pay instead of the domain of hours worked.