fuel consumption (mpg) 40 30 20 10 speed (mph) 10 20 30 40 50 60 70 80 90 100 (a) How much gas is used on a 300-mile trip at 80 mph? Round your answer to two decimal places. 12 gallons (b) How much gas is saved by traveling 70 mph instead of 80 mph on a 200-mile trip? Round your answer to two decimal places. i gallons (c) According to this graph, what is the most fuel-efficient speed to travel? Explain. Round your answer to the nearest integer. The most fuel-efficient speed is where mpg is at a maximum which is about 90 mph.
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
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