I’m bored let’s c h a t!

Find x to the nearest hundredth place

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

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b