Di runs at a rate of 4 meters per second. Which equation models the situation? d = distance traveled
t = time spent running
4 = dt
d = 4t
t = 4d
d = 4d

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.

The graph of a quadratic function has a maximum at point (0, 5). the graph contains the point (2, 1). what is another point on the graph?