Detergent costs $4 per box. kendra graphs the equation that gives the cost y of buying x boxes of detergent. what is the equation?

What’s the domain of this function? fast

Which representation has a constant of variation of -2.5

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