My teacher never taught us anything so can someone help or give answers thanks

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2

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