BritanyJernigan BritanyJernigan

04-06-2015
Mathematics

contestada

If f(3) = 15 and f(5) = 45, which of the following could be f(x)?
a. 4x + 3
b. 2x² – 2x
c. 2x² - x
d. 2x² - 5
e. 5x²

Respuesta :

Panoyin Panoyin

04-06-2015

f(x) = 2x² - x
f(3) = 2(3)² - 3
f(3) = 2(9) - 3
f(3) = 18 - 3
f(3) = 15

f(x) = 2x² - x
f(5) = 2(5)² - 5
f(5) = 2(25) - 5
f(5) = 50 - 5
f(5) = 45

The answer is C.

Answer Link

Otras preguntas

The sugar and stamp acts created incentives for which groups to engage in collective action

In what why did england use mercantilism to control north american colonies

Tell what the following people are going to do tomorrow, by changing the present tense verb to the correct form of the future tense. Bailo en las fiestas.

A(n) _____ scan depicts brain activity by detecting where radioactive forms of glucose go while the brain performs a given task.

Which subatomic particle participates in covalent and ionic bonds?

You are given n = 5 measurements: 5, 3, 3, 8, 8. (a) calculate the sample mean, x. (enter your answer to one decimal place.)

The service industry represents ________ of the value of the u.s. economy.

Dr. mitchell is a scientist studying heredity. she wants to isolate the basic unit for the transmission of heredity, which is a(n) _____.

The sum of a number and 12 is 20. What is the number?

These are the round-trip distances that city buses traveled on different routes each month. Calculate the distance, in miles, that buses travel each city route