Which situations can be modeled by a linear function? Car rental for $40 plus $0.25 per mile driven. B) New car worth $45,000 depreciates by 20% every year. C) 10 pound six week old puppy gaining 3 pounds each month, D) City with a population of 50,000 doubles every 10 years. E) Gym membership that costs $30 and then just $2 per visit.

Match the term on the left with its image or description on the right. match term definition diameter a) circle a and a line segment connecting points b and c which are on the circle. circumference b) circle a and a line segment connecting points b and c which are on the circle. radius c) a piece of the circumference of a circle secant d) two circles that share the same center. concentric circles e) the distance around a circle arc f) a segment between two points on a circle that passes through its center

What is the value of x? enter your answer in the box. (cm)

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.