Does this graph represent a function? Why or why not? 10
8
6+
201
2+
-84
-8
-10+
A. Yes, because it passes the horizontal line test.
B. No, because it is not a straight line.
C. No, because it fails the vertical line test.
D. Yes, because it passes the vertical line test.

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

3. solve the given inequality and graph the solution on a number line.

What is the measure of angle z in this figure? enter your answer in the box. z = ° two intersection lines. all four angles formed by the intersecting lines are labeled. clockwise, the angles are labeled 43 degrees, x degrees, y degrees, and z degrees.