Funções Afins e Problemas Relacionados

A função linear f(x) = 2x + 5 representa a variação de um valor em função de x, onde x é o número de unidades de um produto comprado, e f(x) é o preço total. Qual será o preço total para a compra de 3 unidades deste produto?

• 6

• 11

• 7

• 9

• 5

In a factory, the production of y units of a product is related to the time x in hours by the function y(x) = 4x - 3. What is the number of units produced after 6 hours of production?

• 21

• 24

• 15

• 18

• 22

The table below shows the relationship between the age of an employee and the value of their salary in a company: Age (years) Salary (R$) 20 1500 25 1750 30 2000. Knowing that the relationship is represented by a linear function, what is the expression of this function?

• f(x) = 50x + 1000

• f(x) = 50x + 1000

• f(x) = 50x + 1500

• f(x) = 50x + 1000

• f(x) = 50x + 500

In a parking lot, the parking fee per hour is given by the function f(x) = 3x + 5, where x is the number of hours parked and f(x) is the total amount to be paid in reais. How much does a person pay for 4 hours of parking?

• 17

• 18

• 14

• 15

• 20

The function f(x) = 6x - 10 represents the value of an item as a function of the number of units purchased, where x is the number of units and f(x) is the total purchase value. If a person buys 8 units, what will be the total purchase value?

• 38

• 40

• 42

• 45

• 48

The function f(x) = -2x + 10 describes the production cost of x units of a product. What is the production cost for 5 units?

• 0

• 5

• 10

• 12

• 15

In a survey about electricity consumption, an engineer determined that the function describing energy consumption C(x) as a function of the number of hours x is given by C(x) = 3x + 50. What will be the energy consumption after 10 hours?

• 65

• 80

• 90

• 100

• 95

The function f(x) = 4x - 2 describes the price variation of a product as a function of time, in months. What will be the price of the product after 6 months?

• 22

• 24

• 20

• 26

• 30

The function f(x) = -3x + 15 describes the height of an object in relation to time. After 4 seconds, what will be the height of the object?

• 3

• 6

• 7

• 8

• 9

The function f(x) = 2x - 8 represents the variation of the price of a cinema ticket as a function of the spectator's age, where x is the age and f(x) is the ticket price. What is the ticket price for a 6-year-old?

• 0

• 4

• 6

• 8

• 10