Which vectors represent the reflection of the vector <3,-7> across the x-axis [-3, 7]
<-3,7>
[3, 7]
[7, -3]
<3,7>
<7,-3>

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.

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years