What is the slope of the line?

Find an equation of the line perpendicular to the graph.

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

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.