The magnitude of an earthquake, r, can be measured by the equation r=log +d where a is the amplitude in
micrometers, tis measured in seconds, and d accounts for the weakening of the earthquake due to the distance from the
epicenter
if an earthquake occurred for 4 seconds and d = 2, which graph would model the correct amount on the richter scale?

Abucket of paint has spilled on a tile floor. the paint flow can be expressed with the function p(t) = 6(t), where t represents time in minutes and p represents how far the paint is spreading. the flowing paint is creating a circular pattern on the tile. the area of the pattern can be expressed as a(p) = 3.14(p)^2 part a: find the area of the circle of spilled paint as a function of time, or a[p(t)]. show your work. part b: how large is the area of spilled paint after 8 minutes? you may use 3.14 to approximate pi in this problem.