The area of a rectangle is 48, and its length is 8. What is the perimeter of this rectangle? PLEASE HELP

Although changes result from business transactions, the equality of the fundamental bookkeeping equation must remain. t/f

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

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)