Suppose that you borrow 20000 dollars from a bank, and that the bank charges 4 percent annual interest, compounded monthly, on the loan. You make monthly payments of 200 dollars at the end of each month. Write down a word equation that can be used to calculate the amount that is owed on the loan at the end of the month in terms of the amount owed at the start of the month. Writing the monthly balance (i.e. how much is owed) as yn , translate your word equation into mathematical terms. Simplify this equation. If we write Yn+1 = a yn + b , what are the values of a and b? a = 1.003 b = 8 What is the value of yo? Yo = 20000
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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