Two times a number x, less 15, is greater than or equal to 4 times the number y

Plzzz answer both questions and i will give you 100 points

If bill bought a home for $210,000 and he sold it a year later for $120,000 his percentage of loss is

Acertain group of women has a 0.640.64% rate of red/green color blindness. if a woman is randomly selected, what is the probability that she does not have red/green color blindness? what is the probability that the woman selected does not have red/green color blindness? nothing (type an integer or a decimal. do not round.)