1. A car travels 30 miles on 3 gallons of gas. How many miles can the car go on 12 gallons? 2. A worker earns $40 every 8 hours. How much would the worker earn in 9 hours?
3. At the movie theater, it costs $32.50 for 5 tickets. How much would 2 tickets cost?
4. A household uses 738 kilowatts of electricity in 6 months. How many kilowatts would they use in 4 months?
5. A cell phone call costs $0.32 for 4 minutes. How much would a 11 minute phone call cost?

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?