Alan drives an average of 100 miles each week. His car can travel an average of 25 miles per gallon of gasoline. Alan would like to reduce his weekly expenditure on gasoline by $5. Assuming gasoline costs $4 per gallon, which equation can Alan use to determine how many fewer average miles,m, he should drive each week?

A man motors from A to B. A large part of the distace is uphill and he gets a mileage of only 10 miles per gallon of gasoline. ON the return trip, he makes 15 miles per gallon, then the average of his mileage (assuming that the distance from A to B is 60 miles ) is

A man motors from A to B. A large part of the distace is uphill and he gets a mileage of only 10 miles per gallon of gasoline. ON the return trip, he makes 15 miles per gallon, then the average of his mileage (assuming that the distance from A to B is 60 miles ) is

Jaime is preparing for a bicycle race. His goal is to bicycle an average of at least 280 miles per week for 4 weeks. He bicycled 240 miles the first week, 310 miles the second week, and 320 miles the third week. Which inequality can be used to represent the number of miles, x, Jaime could bicycle on the 4th week to meet his goal?

Carmen went on a trip of 120 miles, traveling at an average of x miles per hour. Several days later she returned over the same route at a rate that was 5 miles per hour faster than her previous rate. If the time for the return trip was one-third of an hour less than the time for the outgoing trip, which equation can be used to find the value of x?

Lennon has 6 hours to spend in Ha Ha Tonka state park. He plants to drive around the park at an average speed of 20 miles per hour, looking for a good trail to hike. Once he finds a trail he likes, he will spend the remainder of his time hiking it. He hopes to travel more than 60 miles total while in the park. If he hikes at an average speed of 1.5 miles per hour, which of the following system of inequalities can be solved for the number of hours Lennon spends driving d, and the number of hours he spends hiking,h, while he is at the park?

The gas mileage for Jan's car is 28 miles per gallon when the car travels at an average speed of 55 miles per hour. The car's gas tank has 20 gallons of gas at the beginning of a trip. If Jan drives at an average speed of 55 miles per hour, Which of the following functions f models the number of gallons of gas remaining in the tank t hours after the trip begins ?

A bike messenger delivers a package from the courthouse to a law firm downtown, traveling at an average speed of 24 miles per hour. On the way back, the bike messenger gets stuck in traffic, which reduces his average speed for the return trip by 12.5 percent . What was the bike messenger's average speed, in miles per hour, for the round trip?

Brian plans to complete a 100-mile bike race for charity. According to his registration materials, he will need to ride at an average speed of 12.5 miles per hour if he wants to complete the course before it closes. On a pratice ride the week before the race, Brain rides 60 miles and trackes his speed. For the first 30 miles, his average speed is 16 miles per hour, and for the next 30 miles, his average speed is 15 miles per hour. If Brian can match these speeds for the first 60 miles of the charity race, then he rests for that total of 1 hour after that, what approximately speed must he maintain for the last 40 miles in order to complete the ride on time?

Jessica's car gets 18 miles per gallon when the car travels at an average speed of 35 miles per hour. Jessica begins a trip with 14 gallons of gas, and she travels at 35 miles per hour for the first 4 hours of her trip. Which of the following functions g is the most accurate model for the number of gallons of gallons of gas remaining in the tank t hours after the trip begins for 0le t le4 ?