John weighs 210 pounds. His goal for the New Year is to lose 10% of his body weight a. How many pounds does he want to lose? By September, he has achieved his goal, but starts to return to his old eating habits. By the following January, he has gained 10% of the weight he was in September. How much does he weigh now? Over the course of the year, from the previous New Year to the current one, what was his overall weight change in terms of a percent? Overall, did he gain or lose for the year?
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.
Quiz 2 (cycle1) 25 minutes
- John weighs 210 pounds. His goal for the New Year is to lose 10% of his body weight a. How many pounds does he want to lose?
- By September, he has achieved his goal, but starts to return to his old eating habits. By the following January, he has gained 10% of the weight he was in September. How much does he weigh now?
- Over the course of the year, from the previous New Year to the current one, what was his overall weight change in terms of a percent? Overall, did he gain or lose for the year?
- Use this expression to answer the following questions: 3x − 4xy +15
- How many terms are in the expression?
- List the variable(s) in the expression.
- List the constant(s) in the expression.
- About 1 in 9 babies in the U.S. are born premature each year.
- What percent of babies in the U.S. are born premature? Round to the nearest whole number.
- If 4 million babies were born in the U.S. last year, how many should have been born premature? Round to the nearest whole number.
- Determine the pattern used to form the Outputs from the Inputs in the following table.
Input Output
3 10
7 22
11 34
15 46
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