PLEASE HELP ASAP
Is each situation a linear or a nonlinear model?
1.
The amount of money a contractor charges for materials and labor is shown by the equation c = 550 + 30h, where c is the amount the contractor charges and h is the number of hours she works.
2.
A car’s value is given by the equation y = 20,000(0.12)x, where y is the value of the car and x is the number of years since the car was purchased.
3.
The number of times a person’s heart beats in several minutes is given by the equation b = 75m, where b is the number of heartbeats and m is the number of minutes.

Question

PLEASE HELP ASAP
Is each situation a linear or a nonlinear model?
1.
The amount of money a contractor charges for materials and labor is shown by the equation c = 550 + 30h, where c is the amount the contractor charges and h is the number of hours she works.
 2.
A car’s value is given by the equation y = 20,000(0.12)x, where y is the value of the car and x is the number of years since the car was purchased.
 3.
The number of times a person’s heart beats in several minutes is given by the equation b = 75m, where b is the number of heartbeats and m is the number of minutes.

anonymous · Answer

4.
The height of an object that falls from a height of 200 ft is given by the equation h = −16t2 + 200, where h is the height of the object and t is time in seconds that the object falls.