The cost of a flight is related to the
length of the flight by y = 0.137x + 40.5
where x is distance in kilometers y is
cost in dollars.
Cost ($)
$389
500
400
300
200
100
1000 2000
Distance (km)
Using this model, what would be the
cost of a flight that travels 2200
kilometers? (circle the correct answer)
3000
$420
$342
$264
The height and weight of adults can be
related by the equation y = 48.3x - 127
where x is height in feet and y is weight
in pounds.
Weight (pounds)
115 lbs
180
160
140
120
100
45 5 5.5 6
Height (feet)
Using this model, what would be the
weight of someone who is 5.3 ft tall?
(circle the correct answer)
65 7
111 lbs
100 lbs
129 lbs