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

Can someone help me

There were 395 lemon ice cups at the snack shop. people bought 177 lemon ice cups. how many lemon ice cups are still at the snack shop

which is a sign of toxic shock syndrome

State bank notes usually had a face value that was ______ their market value, while the notes of the first bank of the u.s. usually had a face value that was __

Which dramatic genre connects to an audience on an emotional level, intertwining elements of comedy and tragedy? a. Melodrama b. Musical c. Comedy

Which of the following is a biotic factor that regulates population size in an ecosystem?

What is the meaning of the word, unprecedented, as used below? It was then that the Society for the Extinction of the Slave Trade and the Civilization of Africa

Rebecca is the head of the primary department at la perouse high school. she believes that children will absorb and retain more information if they are taken on

jurisdiction means the

NEED ANSWER NOW PLEASE! Amy is analyzing a job offer How much income with benefits can she expect? A. $43,500 B. $48,500 C. $53,500 D. $56,000