It would be log3 14/log3 4
Hope this helps. (:
The amount of pizza Mark would have is

Find the common denominators first. 2/12 + 3/12 = 5/12. Two slices of the 6 slice pizza is 1/3 or 4/12.
Your answer would be 9 hours
Rearrange to standard form:-
x^2 - 10x + y^2 = 11
(x - 5)^2 - 25 + y^2 = 11
(x - 5)^2 + y^2 = 36
Center of circle = (5, 0) and radius = sqrt36 = 6
Direct variation:
y - the distance, x - the time
The object falls 144 feet in 3 seconds.
The object falls y feet in 17 seconds.
In 17 seconds the object will fall 4624 feet.