Find percent notation for 0.008 0.008=

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

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

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup