In a 20-question test, Juan's grade was 8. If each correct answer is worth 1 point, each error subtracts 2 points, how many questions has Juan correct? How many has he failed?

Acar traveling at 65 mph leaves 25 foot skid mark what is the ratio of the speed to length of skid mark (feet) in the simplest form

Igor stravinsky tires sells approximately 3,760,000 car tires and 1,200,000 truck tires each year. about 47,000,000 care tires and 26,000,00 truck tires are sold each year in the united states. what is stravinsky's market share in each of these two markets (cars and trucks)?

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?