State the slope Y intercept of the graph y=-2/5x +2

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

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

Find the value of x. give reasons to justify your solutions! c ∈ ae