The cost of a dvd box set increase from 30 to 35 a student says that this represent a 5% increase in the price explain the students error what is the actual percent increase

the answer is (-4,-4)

hope this ! : d

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.