15 POINTS HURRY PLEASE Which statement is the inverse of the conditional statement:

If point B bisects line segment AC into two congruent segments, then point B is the midpoint.

If point B is the midpoint, then point B bisects line segment AC into two congruent segments.
Point B bisects line segment AC into two congruent segments if, and only if, point B is the midpoint.
If point B does not bisect line segment AC into two congruent segments, then point B is not the midpoint.
If point B is not the midpoint, then point B does not bisect line segment AC into two congruent segments.

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60

What is the greater volume 72 quarts or 23 gallons