At 7:00 A.M., Alicia pours a cup of tea whose temperature is 200°F. The tea starts to cool to room temperature (72°F). At 7:02 AM. the temperature of the tea is 197°F. At 7:15 AM. the temperature of the tea is 180°F. Alicia will drink the tea when its temperature is 172°F. Part A Which of the following shows an exponential cooling equation that models the temperature of the tea? A. y= 72(0.989)* + 128 O B. y= 128(0.989)* + 72 O C. y= 200(0.989)* + 72 O D. y= 128(0.989)* + 200 Part B When can Ella drink the tea? Ella can drink the tea after Choose.
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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