Question

A graph with an orange line going through 0, 5 to 3.62, 40. the x-line titled Hours and the y-line titled Amount in Dollars.



The graph illustrates how much Amanda makes babysitting her little cousins. Using the graph, predict how much Amanda will make if she babysits them for eight hours.

$125
$80
$85
$120

Answer 1

Find the rate from the two points: slope = (40 − 5)/(3.62 − 0) = 35/3.62 ≈ 9.67 dollars/hour.
Equation: y = 5 + 9.67x. For x = 8: y ≈ 5 + 9.67·8 ≈ 82.36 ≈ $82.36.

From the choices given, the closest is $80.