The fuel for a chain saw is a mix of oil and gasoline the label says to mix 5 ounces of oil with 15 gallons of gasoline how much oil wouldyou use if you had 45 gallons of gasoline

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

Can someone explain to me how to do

Astore is having a sale in which all items are reduced by 20 percent. including tax, jennifer paid $21 for a pair of shorts. if the sales tax is 5 percent, what was the original price of the shorts