Frances can complete 91 oil changes in 7 days.

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

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Solve the inequaliy: (x^2+2)(x−2)^2(6−2x)> 0