An skating ring was running a special on group rates by allowing a group of 15 people for only $165 plus $4 for each person over 15. (a) Write a function that determines the cost as a function of the number of people in the group. (Assume the number of people included in the group rate is 15.) Define any variables. (b) Find the inverse function from part a. (c) Use part b to determine the number of people in the group if the cost is $241.
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.
An skating ring was running a special on group rates by allowing a group of 15 people for only $165 plus $4 for each person over 15.
(a) Write a function that determines the cost as a function of the number of people in the group. (Assume the number of people included in the group rate is 15.) Define any variables.
(b) Find the inverse function from part a.
(c) Use part b to determine the number of people in the group if the cost is $241.
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