Lisa lives 2050 feet due west of a park bench and Sarah lives 1620 feet due east of the same bench. Sarah left her house at 7:00 pm and traveled at a constant speed of 295 feet per minute towards the bench. Lisa left her house at the same time and traveled at a constant speed of 315 feet per minute towards the bench. Which of the following functions gives the distance d in feet between Lisa and Sarah in terms of the number t of minutes since 7:00 pm? O d = f(t) = 2050 – 295t d = f(t) = 1620 – 315t d = f(t) = 3670 – 610t
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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