Answer
The model predicts 93, 155 and 260 books, respectively.
Work Step by Step
1. If it has 60,000 visits a day:
60,000 visits : $x = 60$.
$0 \leq 60 \leq 100$, so, we are going to use the first function:
$s(x) = 1.55x$
- Substitute the value for "x":
$s(x) = 1.55(60) = 93$
2. If it has 100,000 visits a day:
100,000 visits : $x = 100$.
$0 \leq 100 \leq 100$, so, we are going to use the first function:
$s(x) = 1.55x$
- Substitute the value for "x":
$s(x) = 1.55(100) = 155$
3. If it has 160,000 visits a day:
160,000 visits : $x = 160$.
$100 \leq 160 \leq 250$, so, we are going to use the second function:
$s(x) = 1.75x - 20$
- Substitute the value for "x":
$s(x) = 1.75(160) - 20 = 260$
