Simplify

15a-6a+9a+b=
5m+7n+8m-3n=
9x+7y-3x+2y=
14L-6L+5m+18m-9m=
8x+7y-6x-3y=
5x+8y+9x-3y-2y=
5a+3b+4a=

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.