A car is valued at $15,000 when it enters the market and loses 20% of its value every year. A) Write a function that models that models the value v of the car after t B) How much will the car be worth 8.5 years after it enters the market?
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.
These are the 3-word problems that involve in the precalculus:
1. A car is valued at $15,000 when it enters the market and loses 20% of its value every year.
A) Write a function that models that models the value v of the car after t
B) How much will the car be worth 8.5 years after it enters the market?
2. A bacteria culture initially contains 2000 bacteria and triples in size every 15 minutes. Find the size of the population after 80 minutes.
3. You take 200 milligrams of headache medicine, and after 4 hours, 120 milligrams remain in your system. If the effects of the medicine wear off when less than 80 milligrams remain, when will you need to take a second dose, assuming the amount of medicine in your system decays exponentially?
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