The equation v = -2000t + 20,000 describes the value in dollars of a certain model of car after it is t years old. if a car is worth $14,000, find the age of the car.
a.
5 years
c.
3 years
b.
4 years
d.
2 years

answer is c

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

Give me the equations of two lines that have the same slope but are not parallel.

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters