2p + 5 + 3p = 6p +9

Pleaseee help and can you show work if you can

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days