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

John received negative 22 points on her exam she got 11 questions wrong out of 50 Questions how much was John penalized for each wrong question

What factors contributed to the weakening and decline of Medieval Europe?

What was the goal of hitlers "final solution"?

Do debit cards allow you to draw funds directly from your checking accounts

Complex sugars are called _____. A) monosaccharides B) disaccharides C) polysaccharides

Which answer choice best explains why nuclear reactions release more energy than chemical reactions?

¿Cuáles son algunos temas que muchos poetas hispanos usan en sus poesías? Nombra 2 o más temas, por lo menos.

how do you do number 8

when the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs intersect at two places. Write the y-coordinates of the

There are 3 marbles in a jar, a red, a blue, and a yellow one. A marble is drawn and replaced 10 times. The results of the experiment are recorded in the table