For his services, a private investigator requires a $600 retainer fee plus $90 per hour. Let x represent the number of hours the investigator spends working on a case. (a) Find a function f that models the investigator's fee as a function of x. f(x) = (b) Find f-1. (x) = What does f-1 represent? O ri represents the amount in dollars paid for x numbers of hours of investigation. O F represents the amount in dollars paid beyond the retention fee for x numbers of hours of investigation. O F1 represents the number of hours of investigation the investigator spends on a case for x dollars. O F1 represents the maximum number of hours of investigation the investigator will spend on a case. O F represents the amount paid per each hour of investigation. (c) Find f-1(1950). (1950) = | What does your answer represent? O F(1950) represents the amount in dollars paid for 1950 hours of investigation. OF(1950) represents the amount in dollars paid beyond the retention fee for 1950 hours of investigation. O F(1950) represents the number of hours of investigation the investigator spends on a case for $1950. OF(1950) represents the maximum number of hours of investigation the investigator will spend on a case. O F(1950) represents the amount paid per each hour of investigation.
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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