Bob has $45 deducted from his paycheck at the end of each month and put into a savings accountearning 2% interest compounded monthly. He continues these deposits for seven years. How muchdoes the account worth at the end of the seventh year?2. At age 25, Suzy starts an IRA to save for retirement. She deposits $50 at the end of each month. Ifshe can count on an APR of 4%, how much will she have when she retires 40 years later at age 65?3. You would like to have $35,000 to spend on a new car in five years. You open a savings account withan APR of 4%. How much must you deposit each quarter to reach this goal?4. You want to save $50,000 in 18 years for a college fund for your child by making regular, monthlydeposits. Assuming an APR of 5%,a. calculate how much you should deposit monthly.b. How much comes from the actual deposits and how much from interest?
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.
Bob has $45 deducted from his paycheck at the end of each month and put into a savings account
earning 2% interest compounded monthly. He continues these deposits for seven years. How much
does the account worth at the end of the seventh year?
2. At age 25, Suzy starts an IRA to save for retirement. She deposits $50 at the end of each month. If
she can count on an APR of 4%, how much will she have when she retires 40 years later at age 65?
3. You would like to have $35,000 to spend on a new car in five years. You open a savings account with
an APR of 4%. How much must you deposit each quarter to reach this goal?
4. You want to save $50,000 in 18 years for a college fund for your child by making regular, monthly
deposits. Assuming an APR of 5%,
a. calculate how much you should deposit monthly.
b. How much comes from the actual deposits and how much from interest?
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